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3891 Views 71 Replies Latest reply: Jun 3, 2011 8:38 AM by joehelias RSS
mdme_sadie Just Startin' 113 posts since
Sep 18, 2009
Currently Being Moderated

May 22, 2011 5:03 PM

Better than IR - Match EQ!

So I sat here thinking to myself "Boy IR's really would be awesome in the Pod HD" when it caught me that this was merely competitive thinking.  I think that the Pod should have it because other hardware amp sim products do, like the AxeFX. But not because it's actually the most needed thing.

 

Then it came to me - Yes IR's would be nice to have, but what would be really useful to most people and not just the uber geeks is in fact an inbuilt Match EQ.

 

Thinking about it for a moment.  You're in a cover band, you need to nail "that" tone.  What's going to be more useful to you?  Being able to simply feed in a small snipper of the tune where there's not much but the guitars going on and build an almost perfect match, or finding out exactly what kit the band used, hunting down an IR on the net that most closely matches the cab/mic setup used and still not nailing the sound.

 

So while I'm not going to say we don't need IR support, because I'm a firm believer that we do.  I now think that what the pod needs that would truly set it apart from the competition in terms that the average guitarist could use, and be a huge advantage leapfrogging said competition is it's own Match EQ system.

 

In case anyone doesn't know what Match EQ is then it simply takes a source and destination sound file (in our case it would be the general tone/sound of a patch as the destination), compares them and creates a detailed EQ similar to an IR that makes the EQ's match between the two tracks when applied to the second track.   This is 99% of cab sound.  In fact you could turn match EQ's into IR's.  Check out this stuff http://support.apple.com/kb/TA23246?viewlocale=en_US and  http://www.dailymotion.com/video/xcirb9_logic-studio-how-to-use-the-match-e_school

 

For an example of exactly how Match EQ could be all you need using the HD500 check this thread by Clark Kent over at the AxeFX forums : http://forum.fractalaudio.com/lounge/32757-if-line6-pod-hd500-had-better-cabinets.html

 

This example uses a Match EQ to match tones and its' virtually identical between the HD sound and the original songs there.

 

The benefit to Line6 is that with their own Match EQ they could produce and distribute files that they have control over to generate new tones.  Or they could use IR's as the output and also support IR thus killing two birds with one stone and totally dominating this area of amp sim/tone creation.

  • mcolquitt Just Startin' 186 posts since
    Nov 14, 2009
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    May 22, 2011 10:26 PM (in response to mdme_sadie)
    Re: Better than IR - Match EQ!

    Wow this sounds amazing. I wonder what the cost of R&D would be? Honestly a great post; I love learning new things.

  • mcolquitt Just Startin' 186 posts since
    Nov 14, 2009
    Currently Being Moderated
    May 23, 2011 9:45 AM (in response to mdme_sadie)
    Re: Better than IR - Match EQ!

    From what I am learning thanks to the links provided here as well as others, is that Ozone 4 has a type of match EQ. I am just amazed that I have never heard of this technology before this thread!

  • amgamg Just Startin' 495 posts since
    Oct 25, 2007
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    May 23, 2011 10:17 AM (in response to mdme_sadie)
    Re: Better than IR - Match EQ!

    Anybody notice there are two sliders used to fix the EQ match you just spent forever playing with?

    Also the environment comment makes me wonder how many EQ matches....ummmm.... dont match up like you'd hope?

    I like the EQ on cabs idea but would want a simple adjustment like if you just want to change the cabinet model.

    This seems like a cool idea but it seems time consuming.

  • phil_m Expert Line 6 User 4,243 posts since
    Jan 25, 2007
    Currently Being Moderated
    May 23, 2011 10:33 AM (in response to mdme_sadie)
    Re: Better than IR - Match EQ!

    Who wants to sound exactly like someone else? That's pretty boring. Develop your own sound that your comfortable with, and learn how to use your gear, and I'm sure you could play any cover song you wanted. I've never understood the point of covering a song to sound exactly like the original. Make it your own. If I wanted to hear something just like the original song, I'd just listen to the original song.

    • litesnsirens Iknowathingortwo 649 posts since
      Mar 20, 2010
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      May 23, 2011 10:52 AM (in response to phil_m)
      Re: Better than IR - Match EQ!

      I'm with you Phil as far as the general perspective goes, I only play covers anymore when I gig.  Original stuff is for my own fun recording at home.  Generally I want to get in the ballpark as far as the general tone ie: not gonna use a metal tone on a bluesy kind of tune, but from there I generally shape the tone to what I like, something that will serve me for a bunch of applications, as opposed to having a different sound for each song (god what a headache that would be).  That said I think there is some merit and fun in actually trying to nail a good guitar tone.  Heck, if I could nail EJ's tone in Cliffs exactly I would probably use it exclusively for almost every solo (maybe a little exaggerated).  What I am trying to say is it may not be that specific, maybe the sound of "that" guys cabinet in "that" song is what you think you need to get the sound that you want to use for certain applications. 

    • jasonbogen Just Startin' 357 posts since
      Sep 24, 2007
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      May 23, 2011 2:00 PM (in response to phil_m)
      Re: Better than IR - Match EQ!

      The point is because that is what the people want to hear.  Hell, they get pizzed off when the actual band doesn't play it like the original.  That being said, I don't think it has to be perfect, but I try to get in the ballpark tone wise.  Believe me, I have been the drummer in bands where the guitar player plays everything in his style.  Not good.  If you are an original band covering a few songs in an original way ala old Van Halen that's cool, but as a cover band...not really

      • jasonbogen Just Startin' 357 posts since
        Sep 24, 2007
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        May 23, 2011 2:05 PM (in response to jasonbogen)
        Re: Better than IR - Match EQ!

        I would also add by the way, that I don't think every tone has to be nailed.  A lot of songs use a very similar tone, I don't actually have a tone for every song, but I have a dual AC-30/Bassman with my Rick and Tele models for Petty.  However a bunch of my crunchy classic rock uses my Plexi tones. If there is a distinctive tone for the original that is what I try to nail in my settings.

      • phil_m Expert Line 6 User 4,243 posts since
        Jan 25, 2007
        Currently Being Moderated
        May 23, 2011 6:39 PM (in response to mdme_sadie)
        Re: Better than IR - Match EQ!

        Is that a serious post?  Match EQ doesn't magically alter your playing,

         

        Well, you were certainly making it sound that way - just give the software a sample and have it spit back an impulse that lets you "nail" the tone.  I just think that there's so much more that goes into actually getting a good guitar tone - chances are that plugged into the same rigs as the people you're trying to emulate you wouldn't even sound like them.

         

        What I'm looking for in modeling are good tones period. Tones that inspire me to play. I'm not looking for the perfect piece of software or hardware that will make me sound like a recording.

         

        If you can't sound like yourself playing through anyone's rig then you just don't have your own sound in the first place.

         

        I agree with this to a degree, but not very much. It really depends on what you're doing effects-wise and guitar wise. I know, too, that I would not sound like myself, per se, playing the Squier Bullet through a Frontman amp no matter how hard I try. My amp and my pedals are simply an extension of the instrument.

         

        The vast majority of guitarists out there are amateurs like me, not looking for anything more than to recreate the great songs that they love as perfectly as they can manage.  For them something like this would be a great boon.  FX unit manufacturors understand this, the majority of their premade patches are in fact designed to sound like other guitarists and tracks.

         

        And that is why the majority of factory presets on multi-FX units end up being useless to a lot of people. They work under certain circumstances, but there's no silver bullet.

    • mcolquitt Just Startin' 186 posts since
      Nov 14, 2009
      Currently Being Moderated
      May 24, 2011 9:21 AM (in response to phil_m)
      Re: Better than IR - Match EQ!

      phil_m wrote:

       

      Who wants to sound exactly like someone else? That's pretty boring. Develop your own sound that your comfortable with, and learn how to use your gear, and I'm sure you could play any cover song you wanted. I've never understood the point of covering a song to sound exactly like the original. Make it your own. If I wanted to hear something just like the original song, I'd just listen to the original song.

       

       

       

      Why does someone always have to come in with this exact comment? I would like to know how this is NOT learning your gear. Learning anything new is good for to many reasons for me to bother listing.

      If you don't understand something or someones desire to do something musically then just move on ffs.

      • phil_m Expert Line 6 User 4,243 posts since
        Jan 25, 2007
        Currently Being Moderated
        May 24, 2011 9:26 AM (in response to mcolquitt)
        Re: Better than IR - Match EQ!

        I'm not against learning something new. This particular idea isn't all that new. Har-Bal has been doing basically what the original post describes for eight years or so. I understand completely what he's talking about. I just think the concept is being touted as being more useful than it would be to most people. But, hey, I could be wrong.

        • mcolquitt Just Startin' 186 posts since
          Nov 14, 2009
          Currently Being Moderated
          May 24, 2011 11:21 AM (in response to phil_m)
          Re: Better than IR - Match EQ!

          phil_m wrote:

           

          I'm not against learning something new. This particular idea isn't all that new. Har-Bal has been doing basically what the original post describes for eight years or so. I understand completely what he's talking about. I just think the concept is being touted as being more useful than it would be to most people. But, hey, I could be wrong.

          Thats not even the parts that got me all puffed up its the comments about the cover tunes. I will tell you why... I was given some advice froma sales guy at guitar center in the late 90's when I bought a ton of gear and software. When I asked him what is the best way to learn the equipment I had just bought, he said simply "Try and forget about originals to start with, there is too much emotion that goes along with the production as it is your creation and you will get side tracked more easily from the task of learning about production. Try and recreate your favorite songs and get them to sound as close to the original recording as possible." And with that advice and a book or two it really helped me so much in such a short period of time I was truly grateful.

          • mtreehugger Just Startin' 195 posts since
            Mar 15, 2011
            Currently Being Moderated
            May 24, 2011 1:09 PM (in response to mcolquitt)
            Re: Better than IR - Match EQ!

            Well said!  Emulating somebody else's tone is just like learning somebody else's licks, isn't it?  Imagine if you were talking about learning some songs by Clapton or SRV or anybody, and received an argument that you should instead entirely write and arrange your own original material.

             

            Match EQ isn't a destination, it's a tool.

      • amgamg Just Startin' 495 posts since
        Oct 25, 2007
        Currently Being Moderated
        May 24, 2011 9:55 AM (in response to mcolquitt)
        Re: Better than IR - Match EQ!

        1mp3-player.jpg

        Get one of these..its cheap..effectve...will sound exactly  like whatever you put into it. No one will ever say it doesnt sound exactly like the song its playing....best of all...just turn it on and go have a beer. No playing nessary

  • spaceatl Expert Line 6 User 4,456 posts since
    Jan 24, 2007
    Currently Being Moderated
    May 23, 2011 2:51 PM (in response to mdme_sadie)
    Re: Better than IR - Match EQ!

    cab modeling has a long, long way to go I think...IRs are NOT the end game...too many other things going on in a speaker cabinet...

     

    No EQ is NOT 99% of cabients' sound...You forgot all about Impedance and reactance...two things that change in real time as you play based on what you are playing and causes the amplifier to react differently...sorry, I just disagree with you on that generalization...I think cab modeling is in its infancy...just my opinion...

     

    Ideally you would be able to change the type of wood the cab is made of, how thick it is, dampening inside...and that's just the atributes of the cabinet...Then we should be able the chaange the speakers, the impedance of the speakers, brand whatever...The cabinet it self will affect the impededance that the cabinet sees...If it is sealed the reactance will drop and impedance will go up a bit, and the tone will change in real time...it moves...This does NOT happen with IRs...They are static..While a lot of them sound good, they don't move like a real cabinet to me...But I bet one day we will have enough processing to really model a cabinet properly...In some ways I think the cab modeling itself, done right, would be more complicated and require more precessing than an amplifier model...

  • tommasi Iknowathingortwo 627 posts since
    Sep 3, 2007
    Currently Being Moderated
    May 24, 2011 5:56 AM (in response to mdme_sadie)
    Re: Better than IR - Match EQ!

    I don't understand why there have been so many negative comments about this. It might be because match eq has been suggested as a way of "copying a tone" which may have rubbed people the wrong way, but in reality is only half the story. But for all intents and purposes I think this is not a bad idea, basing on these grounds:

     

    1. it would imply that a more complex, powerful EQ is added to the unit -- an EQ like the one on the XT/X3, for instance; many people requested this
    2. "matching EQ" can be simply a way to determine the setting of such an EQ automatically. It doesn't even need to be a facility available in the unit itself; it could be implemented into HD edit as a means to configure the onboard EQ (and besides, it might be tricky to put a sample onto the unit itself)

     

    I think it has been established (in the IR thread and otherwise) that many adjustments could be achieved by way of a more powerful EQ, and requests for flexible EQs are consistent throughout the forum. Point 1 would take care of this. Point 2 might be useless for some and useful for others, but it wouldn't impact much on the unit itself.

     

    Coverband tone-cloning aside, the implication being a fine-grained, powerful EQ, I'm all for it.

    • phil_m Expert Line 6 User 4,243 posts since
      Jan 25, 2007
      Currently Being Moderated
      May 24, 2011 8:11 AM (in response to tommasi)
      Re: Better than IR - Match EQ!

      I'm not trying to be overly negative - I'm just trying to inject a little perspective into the conversation. I think we all have a tendency to think that if we just get this next piece for our rig, it will sound great, and we will reach tone Nirvana. OK, I'm exaggerating, but while I think EQ is a very useful tool, I think it can also be crutch thatends up hollowing out your tone without you realizing. For a number of years, I felt I needed to depend on a EQ pedal in my rig, but them one day, I decided to turn it off, and it was like removing a blanket from my tone. I had forgotten what I was cutting and boosting. I just think that depending on it too much leads to very unnatural sounding tones, and if you're around them too long, you just get used to them. I do agree, though, that having better EQs available to us in the HD500 would be a help. But EQs should be used like a scalpel not like steak knife.

      • tommasi Iknowathingortwo 627 posts since
        Sep 3, 2007
        Currently Being Moderated
        May 24, 2011 8:36 AM (in response to phil_m)
        Re: Better than IR - Match EQ!

        I certainly can't argue with that! EQing to fix a bad tone means that the problem is elsewhere. The problem with the present EQs in the HD is that it doesn't lend itself too well for the tone surgery that many require.

        • phil_m Expert Line 6 User 4,243 posts since
          Jan 25, 2007
          Currently Being Moderated
          May 24, 2011 2:10 PM (in response to mdme_sadie)
          Re: Better than IR - Match EQ!

          So much sanctimony and bravado have coalesced around this issue, it's really quite funny.

           

          Everyone's ideas are great and should never be questioned! Does that make you feel better?

           

          I didn't just fall off the guitar apple cart yesterday, you know. And I don't appreciate being talked down to like I'm a moron. I've engineered and produced albums before, and I've played with plenty of talented people on some decent size stages. I've been around the block a few times gearwise, and I've learned a few things about what works and what doesn't.

           

          I listened to the samples, and frankly, I wasn't overly impressed with any of them. I try not to talk badly about other people's stuff, so that's why I hadn't commented before.

           

          The whole idea I am reacting against is the one you originally put forth in this thread - that having a match EQ tool would enable people to "nail the sound" they are trying to emulate. That may or may not be true - it's probably the latter. It may help you get there, but there are a number of other tools that will help you get there as well. And where did I ever say that EQ was bad? I simply didn't. I don't even know if you know what you're really arguing for or against anymore.

            • spaceatl Expert Line 6 User 4,456 posts since
              Jan 24, 2007
              Currently Being Moderated
              May 24, 2011 10:40 PM (in response to mdme_sadie)
              Re: Better than IR - Match EQ!

              The jist of your thread was that a Matched EQ could replace an IR or supplement one...An IR isn't really anything more than that...A static response curve...I posted my thoughts...You did not repsond...oh well...Two static filters in a chain does not a cabinet make...no reactance, no impedance shift changing the power amp model in real time...Take a look at how speakers work and how tube amps change tone with impedance...There is a lot missing from your solution...I even took the time to tell you what you are missing...

               

              EQ is not the end game for a cabinet...there is a lot more going on in that than an EQ curve...EQ curves actually have detracting effect...phase...does not matter if is analog or digital either...the more you attenuate, the more the phase goes to shiot...All decent sound engineers know this...Like Phil, I have done this sorta thing too...Not that your idea is bad...A great way to figure out where one might need to go in selecting speakers for example so the curve could be less radical...I respect your passion, but man please...enough with the nit picking...

                • spaceatl Expert Line 6 User 4,456 posts since
                  Jan 24, 2007
                  Currently Being Moderated
                  May 25, 2011 12:23 AM (in response to mdme_sadie)
                  Re: Better than IR - Match EQ!

                  This had the makings a cool thread...But you have already drawn your own conclusions so I see no need to participate any further...bye...

                • SWoRd Just Startin' 48 posts since
                  Jun 5, 2008
                  Currently Being Moderated
                  May 25, 2011 1:42 AM (in response to mdme_sadie)
                  Re: Better than IR - Match EQ!

                  I think you both have a valid point. A static filter would not be as accurate as an algorithm that can also model the dynamic effects of loading the amp output with reactive components like coils and capacitors, but the question is where should you stop. I suppose you could make 3D mechanical models of cabinets and model the air-flow solving Bernoulli equations to get a representation of the speaker baffle struggling with air movement, and you might even include barometric pressure and moisture into your model ... the point is that no matter how detailed a model you're making you can always include more, but it's a matter of diminishing returns and you have to stop somewhere.

                   

                  A static filter won't give you the dynamic effects but then again you are going to get them at some point anyway. They might not be accurate to the ultimate detail of the speaker you are going to emulate, but even if you're going directly to the board and through the PA, at some point the Front-Of-House sound is going to involve real speakers moving air at substantial volume, and thus include some of the effects we are talking about here. I realize that a FRFR PA system is not going to have the exact same dynamic characteristics as a guitar amp, but if you can get close with a dynamic amp model and some accurate EQ, then it might be "good enough for rock'n'roll".

                  As for the phase issues for EQ yes some EQ's phase if they're based on comb filter (most in fact), but there is also what's known as "Linear EQ" which doesn't result in phasing artifacts, it is more processor intensive and the benefits are arguable but it's possible.

                  I don't agree that linear phase response requires a lot of DSP power. A simple FIR filter (only multiply-accumulate calculations) can implement any arbitrary amplitude and phase response. It can be a linear phase response, or it could be a non linear phase response to perhaps compensate for other non linear phase responses of some of the physical components in the signal chain. This is one of the huge benefits of digital FIR filters compared to analog hardware filters using resistors, coils and capacitors - you have complete freedom to chose any arbitrary amplitude and phase response. I have been working with this professionally when we implemented a modem in a DSP. We used an adaptive FIR filter to create the inverse amplitude and phase response of the communication channel, so that the combined system response was flat amplitude and linear phase response. This enables a higher communication speed when you have a perfect communication channel.

                   

                  The beauty of the FIR filter is that you get a very high resolution EQ - a bit like a 31 band graphical EQ where you can adjust both amplitude and phase response with high resolution. The IR will provide this functionality with very little DSP load (basically just a FIR filter). The Match EQ is a design tool on top of this and could be viewed as an automatic IR generator. I realize that modeling of dynamic effects would add further to the details of cab modeling, but IMO it would be sad if the best solution should be the worst enemy of a good solution.

                   

                  Best regards

                  Soren

              • mtreehugger Just Startin' 195 posts since
                Mar 15, 2011
                Currently Being Moderated
                May 25, 2011 7:30 AM (in response to spaceatl)
                Re: Better than IR - Match EQ!

                Spaceatl,

                 

                I thought your comments in your 1st post were great!  Sorry nobody followed up on them.  But regardless of whether the hd's eventually get more in-depth speaker modeling, the truth is that we don't have this now, and a lot of guitarists' ears are picking up on the cabs as the weak point in the signal chain.  If Line 6 could/would do what you suggest, IMO that would be the best possible scenario proposed thus far, but it seems pretty clear to me that this would take a lot more R&D than providing a match eq function.  Moreover, having both what you suggest and match eq would be better than having either (IMO of course), so in that vein the merits of match eq still stand.

          • mtreehugger Just Startin' 195 posts since
            Mar 15, 2011
            Currently Being Moderated
            May 25, 2011 7:50 AM (in response to phil_m)
            Re: Better than IR - Match EQ!

            One of the things I see in these forums is that the experts view themselves as just regular forum participants, but most other participants do not see them that way.  To the rest of us, the experts are as close to an actual contact with Line 6 as we get in the forums.  So when experts post their opinions--like it or not--they carry a certain weight that other posts do not.  I've heard that some experts never sought to become experts, but that still does not alter the inherit perception of the community that is married to an L6 emblem.

             

            Experts, IMO, need to be more aware than when they play the devil's advocate, when they find fault in an idea, point out weaknesses, provide counterpoint, or generally disagree with an idea, it's like Line 6 just came in and said no.  As much as they may wish to be ordinary forum participants simply expressing their views, the L6 emblem has basically taken that away.

             

            Guitarists are artists, and tone is crucial to the passions and feelings that artists try to evoke.  Therefore, passion is a natural byproduct in a discussion over tone.  (I basically just paraphrased a post by spaceatl last month).

             

            I believe the very substantial effort donated by the OP here is a direct result of (and a demonstration of) the typical reaction that the average poster experiences when experts disagree and/or challenge an idea.  I believe that if these forums are to become less combative, the burden is on the experts to adapt to the reality of their status as experts and their L6 badges.

            • phil_m Expert Line 6 User 4,243 posts since
              Jan 25, 2007
              Currently Being Moderated
              May 25, 2011 8:13 AM (in response to mtreehugger)
              Re: Better than IR - Match EQ!

              I hear what you're saying, and it makes sense, of course. I think the fact that Line 6 changed the badges to say "Expert User" rather than simply "Expert" was an effort to make it look less like we were official Line 6 spokesmen or something. I don't think any of the ideas posted here were bad. I guess because I'm an engineer in real life, I just tend to approach technical claims with a large degree of skepticism. Because, let's face it, there are lot of people making claims that they can't back up in the real world. I'm not saying that the original post does that.

               

              This whole match EQ stuff is useful as a studio tool, but I don't know how useful it would be to a guitarist playing in a band - even in a cover band. For one thing, even though the tracks that were presented may match up very well with the album tracks, that's not necessarily the goal playing in a live situation. A guitar track being matched from an album willl have undergone who knows what in the way of post-production and mastering, so to me, the tracks that were presented sounded rather processed, and not what I'd expect a good raw guitar tone to necessarily sound like. Did anyone else notice that the audio files looked pretty much like a solid block and sounded pretty compressed? That's why I say it's not necessarily a good thing to try and craft a raw guitar tone to match a mastered one. Mastering is bound to take something away that you probably would want in a live situation or in the actual raw tracks prior to mixdown.

              • mtreehugger Just Startin' 195 posts since
                Mar 15, 2011
                Currently Being Moderated
                May 25, 2011 9:48 AM (in response to phil_m)
                Re: Better than IR - Match EQ!

                Great points!  Actually, a potential drawback of match eq just occurred to me, i.e. the scenario where hd owners are now making posts that when they use the function it sounds like crap.  And in reality, this kind of result from match eq will probably be the rule rather than the exception.  No doubt Line 6 would include disclaimers that the function may be unpredictable or whatever, but not everybody is going to understand the tool, how to use it, or what to expect from it.

                 

                Now I realize that the argument I just made is kinda pathetic, but it is a real-world thing that Line 6 would have to deal with.  However, the success of deep edit parameters given in v1.31 I think is evidence that the majority would have no problem with match eq.

              • SWoRd Just Startin' 48 posts since
                Jun 5, 2008
                Currently Being Moderated
                May 25, 2011 11:46 AM (in response to phil_m)
                Re: Better than IR - Match EQ!
                This whole match EQ stuff is useful as a studio tool, but I don't know how useful it would be to a guitarist playing in a band - even in a cover band. For one thing, even though the tracks that were presented may match up very well with the album tracks, that's not necessarily the goal playing in a live situation.

                I agree that it's not critical to have a mach EQ function implemented directly on the HD500 unit. This could work just as well if you have this function in a separate PC program. The important thing is to have the option to upload an IR to the unit, and thus be able to use the results of a match EQ program. If you don't like the match EQ method you can use some of the many other options of getting an IR that fit your needs and preferences. The main thing is that you have a way to implement the resulting IR filter on the HD500.

                 

                Best regards

                Soren

                • meambobbo Iknowathingortwo 1,702 posts since
                  Dec 13, 2007
                  Currently Being Moderated
                  May 25, 2011 12:05 PM (in response to SWoRd)
                  Re: Better than IR - Match EQ!

                  I have PAINSTAKINGLY tried to match EQ all the onboard 4x12's on the Pod (except the Hiway) using the Pod's onboard EQ's to the closest RedWirez equivalent cab mic'ed with "CapEdgeOffAxis" at 1/2".  I did this for both the SM57 on axis and SM57 off axis mic positionings on the Pod.  I have also given myself a constraint of doing so using 4 EQ's or less.

                   

                  Tonight I will finish this process - just need to refine the Blackbacks.  Then I'll pair each set of 12 match EQ'ed patches with a different high gain amp and fill a setlist.  So the 5 high gain amps will each have 12 patches.

                   

                  I'll post the setlist either tonight or tomorrow.  Unless you need those effects blocks, you will not be disappointed.  I'll settle for this until we get custom IR's, or otherwise better cabs.

                  • mtreehugger Just Startin' 195 posts since
                    Mar 15, 2011
                    Currently Being Moderated
                    May 25, 2011 12:10 PM (in response to meambobbo)
                    Re: Better than IR - Match EQ!

                    Geez!  You're an ANIMAL (workhorse)!!!  Are you manually tweaking the eq's and then making comparisions, or using a match eq app somehow?

                    • meambobbo Iknowathingortwo 1,702 posts since
                      Dec 13, 2007
                      Currently Being Moderated
                      May 25, 2011 12:37 PM (in response to mtreehugger)
                      Re: Better than IR - Match EQ!

                      Here's the process:

                       

                      First I recorded raw guitar signal playing low E power chords directly into my audio interface.  I turned that into a high quality mp3 and uploaded it to my phone.  Then I ran my phone's 1/8" out jack into the Pod HD's guitar in jack.  So I'm ensured that there are no differences due to playing or other normally-variable conditions.

                       

                      So then I recorded the Pod's output via SPDIF using that file's playback as input.  I always used the Uber amp sim with all dials set to 50% except drive which was set to 55% and ER set to 0%.

                       

                      I first recorded with "no cab" selected.  Then I applied the RedWirez IR to this track in software, and recorded the output to a separate track for each IR used.  So then I had 6 IR tracks for each cab.

                       

                      Then I recorded each cab/mic pair on the Pod enabled.  So I'd record one at a time the Uber On Axis, Uber Off Axis, Mesa V30 On Axis, Mesa V30 Off Axis, etc.

                       

                      Then I'd pan the Pod-cab tracks to the left and the IR tracks to the right.  I'd set a matching set to solo output, so the only thing being output was the Pod track panned left and the IR track panned right.  I used the software mixer to level the tracks, then I'd record this output into a new stereo track.  So I'd end up with 12 stereo tracks.

                       

                      The reason I recorded it into a stereo track is because this was the easiest way to get Voxengo Span to display both frequency responses simultaneously in the same window for easiest comparison.

                       

                      I visually compared them using Span, then I'd adjust the Pod's EQ's to try to get the Pod's frequency response equal.  Then I'd save the Pod HD patch as V2, V3, etc.

                       

                      Then I'd re-record the Pod tracks and recompare...and repeat.  Once I found a more-or-less solid match, I'd leave it out of the next cycle.

                       

                      I'm up to version 7 on comparisons.  Most took 3-4 versions to get to the point where I said "close enough".  The Blackbacks have eluded me still, but I think I really messed up going from V2 to V3, and now I can't find my V2 tones.  I only have a few minute changes left to make.

                       

                      And finally, once I had the EQ's matched, I would move one of the Studio EQ's in the chain to the end of the chain, and use the "gain" parameter to level all the output.  So it not only match EQ's to a specific IR output, but it has consistent levels across all cabs.

                      • ClarkKentJob Just Startin' 61 posts since
                        Mar 11, 2011
                        Currently Being Moderated
                        May 25, 2011 1:10 PM (in response to meambobbo)
                        Re: Better than IR - Match EQ!

                        Sorry guys but I have to ask you: Have you ever done EQ matching?

                         

                        I've done it a lot and EQ matching cabinets is a HARD THING to do. Not because of the technical stuff but it basically means that you should have the same guitar, same guitar amp and same picking style as the track you are matching. Then you need a reference clip to match EQ stuff. How do you put reference clips inside the POD HD?

                         

                        I'm not saying it's impossible but it's pretty complicated and I've done it quite a lot. I do have like 30 match EQ Petrucci IR's BUT the way they work is that I have to have the same amp model (Recto) with all knobs at noon and that's when I get those exact tones with my POD into my DAW.

                         

                        ATM my friend is recording an EP with his band and all guitars are John Petrucci - Damage Control tone.

                         

                        But hey CUSTOM IR is a simple thing that could easily be in the next firmware update. MATCH EQ... I don't think it can be done. Sorry but I think it's impossible because not everyone can match EQ stuff. It took me two weeks of hard work to get my first working match EQ'd IR.

                          • ClarkKentJob Just Startin' 61 posts since
                            Mar 11, 2011
                            Currently Being Moderated
                            May 25, 2011 2:02 PM (in response to mdme_sadie)
                            Re: Better than IR - Match EQ!

                            I know what EQ matching is. I use Ozone 4 for EQ matching. Here's one I did with my friend: http://soundcloud.com/clark-kent-job/pod-vs-constant-motion-ir

                             

                            Please tell me how you plan to get source material into your POD HD.

                            How many people would go through the trouble of finding source material?

                            How many people can play a destination clip as tight as the source material?

                             

                            There are so many things that can (and most likely will) go wrong if an unexperienced EQ matcher (lol) would try it out.

                             

                            I've done this for months and it takes a lot of work. I don't understand how this could be done inside a POD?

                            • meambobbo Iknowathingortwo 1,702 posts since
                              Dec 13, 2007
                              Currently Being Moderated
                              May 25, 2011 2:34 PM (in response to ClarkKentJob)
                              Re: Better than IR - Match EQ!

                              Clark is right - I have difficulty antipating how well a match EQ would work in the Pod.  I suppose it could work, but I see a lot of user error occuring.

                               

                              There are ways I could see it implemented, but all them are way over the average user's head.

                              • ClarkKentJob Just Startin' 61 posts since
                                Mar 11, 2011
                                Currently Being Moderated
                                May 25, 2011 2:53 PM (in response to meambobbo)
                                Re: Better than IR - Match EQ!

                                I don't mean to bash an idea. It's a good idea but it's impossible.

                                 

                                HOWEVER: Once they make CUSTOM IR's possible I promise to MATCH EQ 50 IR's! I'm taking requests when it happens. It'll be a thank you to this community for making custom IR's possible.

                            • johnnyayyy Iknowathingortwo 1,170 posts since
                              Feb 24, 2010
                              Currently Being Moderated
                              May 25, 2011 3:12 PM (in response to ClarkKentJob)
                              Re: Better than IR - Match EQ!

                              ClarkKentJob wrote:


                               

                              Please tell me how you plan to get source material into your POD HD.

                              CD player output to HD500 input? Press play on CD payer and engage Looper on HD?

                               

                              Two thoughts:

                               

                              1. Match EQ for HD500 would probably have to be done on a computer with HD Edit or maybe a separate program.

                               

                              2. Cool as it would be Match EQ is probably never going to be available for the HD series from L6.

                               

                              Q. Clark, I believe you said in the clips you made you used a Redwirez IR then made your own Match EQ IR, so the tone we are hearing is run through 2 IRs one after another, correct?

                               

                              Q. Is there any way to make a single composite IR from these two IRs with the reactance and impedance shift from the Redwirez IR and the added EQ curve of your Match EQ IR? Any IR morphing/modification program available?  If so all that would be needed to do what we are talking about (custom EQ'ed IRs in a live application) would still be custom IR implementation on the HD, right?

                              • ClarkKentJob Just Startin' 61 posts since
                                Mar 11, 2011
                                Currently Being Moderated
                                May 25, 2011 3:29 PM (in response to johnnyayyy)
                                Re: Better than IR - Match EQ!

                                This is the way I see it guys. Custom IR's seem to give Line6 a hard time to accomplish. However adding it into the POD is like a million times easier than coming up with a match EQ system that only 5% of POD HD users know how to or can use.

                                 

                                There's no way it'll be there. I know it would be great but the idea only sounds great.

                                 

                                AND!!! Having match EQ would require having custom IR support in the POD HD.

                                • johnnyayyy Iknowathingortwo 1,170 posts since
                                  Feb 24, 2010
                                  Currently Being Moderated
                                  May 25, 2011 4:04 PM (in response to ClarkKentJob)
                                  Re: Better than IR - Match EQ!

                                  ClarkKentJob wrote:

                                   

                                  This is the way I see it guys. Custom IR's seem to give Line6 a hard time to accomplish. However adding it into the POD is like a million times easier than coming up with a match EQ system that only 5% of POD HD users know how to or can use.

                                  There's no way it'll be there. I know it would be great but the idea only sounds great.

                                  I agree. I posted 2 questions for you earlier but I think they got lost in the shuffle...

                                   

                                  Q1. Clark, I believe you said in the clips you made you used a  Redwirez IR then made your own Match EQ IR, so the tone we are hearing  is run through 2 IRs one after another, correct?

                                   

                                  Q2.  Is there any way to make a single composite IR from these two IRs with  the reactance and impedance shift from the Redwirez IR and the added EQ  curve of your Match EQ IR? Any IR morphing/modification program  available?  If so all that would be needed to do what we are talking  about (custom EQ'ed IRs in a live application) would still be custom IR  implementation on the HD, right?

                                  • ClarkKentJob Just Startin' 61 posts since
                                    Mar 11, 2011
                                    Currently Being Moderated
                                    May 25, 2011 4:12 PM (in response to johnnyayyy)
                                    Re: Better than IR - Match EQ!

                                    Q1. Clark, I believe you said in the clips you made you used a  Redwirez IR then made your own Match EQ IR, so the tone we are hearing  is run through 2 IRs one after another, correct?

                                     

                                     

                                     

                                    Q2.  Is there any way to make a single composite IR from these two IRs with  the reactance and impedance shift from the Redwirez IR and the added EQ  curve of your Match EQ IR? Any IR morphing/modification program  available?  If so all that would be needed to do what we are talking  about (custom EQ'ed IRs in a live application) would still be custom IR  implementation on the HD, right?

                                     

                                    The matched IR's that I've made didn't have Redwirez in them. It's just comparing the NO CAB signal with a real recorded signal. Simply (guitar+amp+cab) - (guitar+amp) = cab That's the strategy. About those programs... I don't know. I use Ozone 4 for EQ matching and Voxengo Boogex as a program that runs the IR's.

                                     

                                    A friend of mine is using a laptop on gigs and he is running his guitar signal through a John Petrucci - Damage Control IR. That's one way... but how long will it take until his laptop gets beer on it... not long.

                                  • meambobbo Iknowathingortwo 1,702 posts since
                                    Dec 13, 2007
                                    Currently Being Moderated
                                    May 25, 2011 4:18 PM (in response to johnnyayyy)
                                    Re: Better than IR - Match EQ!

                                    I could be wrong, but an IR isn't an EQ curve - it's much more than that, emulating how speakers can fall out of phase at certain frequencies as opposed to others and other natural forms of tone-shaping that comes from the intricate imperfection of a certain type of speaker.

                                     

                                    A match EQ is not an IR - it merely performs a frequency analysis on a source material and then does the same thing to the target material, then subtracts the curves and makes that an EQ.  If Clark is creating a new IR by recording the RedWirez IR through the Match EQ, then it should sound no different than if he were using the RedWirez IR + the match EQ.  He is not physically recording a speaker output that is playing back an IR.  He is recording the IR + Match EQ output directly to a new audio track inside his DAW, then performing deconvulution on the result.  So the RedWirez gives the speaker characteristics, and he's just adding EQ to it.

                                    • johnnyayyy Iknowathingortwo 1,170 posts since
                                      Feb 24, 2010
                                      Currently Being Moderated
                                      May 25, 2011 4:35 PM (in response to meambobbo)
                                      Re: Better than IR - Match EQ!

                                      meambobbo wrote:

                                       

                                      I could be wrong, but an IR isn't an EQ curve - it's much more than that, emulating how speakers can fall out of phase at certain frequencies as opposed to others and other natural forms of tone-shaping that comes from the intricate imperfection of a certain type of speaker.

                                      Yes, this is as I understand it also.

                                       

                                      meambobbo wrote:


                                      If Clark is creating a new IR by recording the RedWirez IR through the Match EQ, then it should sound no different than if he were using the RedWirez IR + the match EQ.  He is not physically recording a speaker output that is playing back an IR.  He is recording the IR + Match EQ output directly to a new audio track inside his DAW, then performing deconvulution on the result.  So the RedWirez gives the speaker characteristics, and he's just adding EQ to it.

                                      that is what I thought he said he was doing originally, but his post above explains there was no Redwirez cab involved, only the HD500 with "no cab" selected match EQ'ed to a recording of the real amp he is emulating. In this particular case it seems the IR IS a simple EQ response curve with no phase/impedence shift etc. as would be found in a normal speaker IR like Redwirez etc.

                                      • meambobbo Iknowathingortwo 1,702 posts since
                                        Dec 13, 2007
                                        Currently Being Moderated
                                        May 25, 2011 6:59 PM (in response to mdme_sadie)
                                        Re: Better than IR - Match EQ!

                                        I don't want to start a debate, but this is what wikipedia says under "impulse response":

                                         

                                        Loudspeakers

                                        An application that demonstrates this idea was the development of impulse response loudspeaker testing in the 1970s. Loudspeakers suffer from phase inaccuracy, a defect unlike other measured properties such as frequency response. Phase inaccuracy is caused by small delayed sounds that are the result of resonance, energy storage in the cone, the internal volume, or the enclosure panels vibrating. Measuring the impulse response, which is a direct plot of this "time-smearing," provided a tool for use in reducing resonances by the use of improved materials for cones and enclosures, as well as changes to the speaker crossover. The need to limit input amplitude to maintain the linearity of the system led to the use of inputs such as pseudo-random maximum length sequences, and to the use of computer processing to derive the impulse response.[2]

                                          • SWoRd Just Startin' 48 posts since
                                            Jun 5, 2008
                                            Currently Being Moderated
                                            May 26, 2011 12:35 AM (in response to mdme_sadie)
                                            Re: Better than IR - Match EQ!

                                            I will have to agree with meambobbo on this one. An IR can measure/define both the amplitude response and the phase response of a system, and unlike a conventional analog EQ the amplitude and phase response is not linked, but can be measured/defined separately. You can make an all-pass filter with completely flat amplitude response and a non linear phase response, affecting only the timing (delay) of the different frequencies. Such a filter playing through a perfect FRFR system would have the following effects:

                                            - A slow sweep of a single frequency pure sine wave would not be affected and the combined amplitude response would be flat.

                                            - If you play something other that pure sine waves - a signal/pulse that contains several different frequency components, the signal/pulse would be distorted due to the non linear phase response. Some of the frequencies in the signal/pulse would be delayed more than others and the signal/pulse shape would be distorted.

                                             

                                            Another detail is that you don't want a flat phase response but a linear phase response. You might want a flat delay response which is the first derivative of the phase response. I think you agree with me on this and it's just a small definition inaccuracy - an example: you want to delay a 1KHz component the same amount of time as a 3KHz component to keep the same shape of a pulse containing both, so if the 1KHz component is delayed one cycle or 360 degrees you'll want the 3KHz component to be delayed for 3 cycles or 1080 degrees.

                                             

                                            If you want an IR filter to correct or counteract non linear phase responses introduced by other components in the system, you can certainly do that without affecting the amplitude response. You can also implement non-linearities if you want to model a system that has these. The main thing is that you have total freedom to define both amplitude and phase response separately in a digital FIR filter (as opposed to a typical analog filter EQ).

                                             

                                            I agree that if you want to model dynamic effects you'll need an adaptive filter where the filter characteristics changes dynamically, and this is a bit more complex.

                                             

                                            Best regards

                                            Soren

                                            • ClarkKentJob Just Startin' 61 posts since
                                              Mar 11, 2011
                                              Currently Being Moderated
                                              May 26, 2011 12:51 AM (in response to SWoRd)
                                              Re: Better than IR - Match EQ!

                                              I'm pretty sure it's just an EQ curve.

                                              • SWoRd Just Startin' 48 posts since
                                                Jun 5, 2008
                                                Currently Being Moderated
                                                May 26, 2011 1:21 AM (in response to ClarkKentJob)
                                                Re: Better than IR - Match EQ!

                                                If you by "just an EQ curve" mean just an amplitude response, then you might be right from a user point of view. I don't know the particular program they're talking about, but the program developer might have chosen to hide the complexity of phase response from the user and just display the amplitude response?. That doesn't mean that there is no phase response associated with the IR, but merely that they do not display this part of the filter response to the user.

                                                 

                                                IMO the phase response of a system is very important as we seldom play with pure sine waves. The attack / punch / percussive tone elements are such an important part of the signature sound, so it would be very nice to have full control of this aspect. IR's will give you that. :)

                                                 

                                                Then we can deal with the dynamic effects and adaptive IR's at a later stage ... you know, crawl before you walk and all that.

                                                 

                                                Best regards

                                                Soren

                                                • meambobbo Iknowathingortwo 1,702 posts since
                                                  Dec 13, 2007
                                                  Currently Being Moderated
                                                  May 26, 2011 7:48 AM (in response to SWoRd)
                                                  Re: Better than IR - Match EQ!

                                                  I really don't know what I'm talking about as far as how an IR actually works or how phasing works etc.  I just know that wikipedia says that creating IR's to emulate loudspeakers was an application of IR's because speakers had phase inaccuracy which was not represented in a frequency response - ie, traditional EQ.

                                                   

                                                  From all the work I've done, that would seem to be true.  I can match up the EQ response for two different cab sims on the Pod HD, and they still sound different.  You can particularly tell that a cab using the SM57 on axis sounds different from the same cab and mic but off axis, even when you match up their EQ.

                                                   

                                                  So Clark, are you actually not using an IR at all but are just applying an EQ curve to the Pod signal without cab/mic simulation?  I am curious to know what that sounds like.

                                              • johnnyayyy Iknowathingortwo 1,170 posts since
                                                Feb 24, 2010
                                                Currently Being Moderated
                                                May 26, 2011 10:33 AM (in response to ClarkKentJob)
                                                Re: Better than IR - Match EQ!

                                                ClarkKentJob wrote:

                                                 

                                                I'm pretty sure it's just an EQ curve.

                                                There is a pretty clear explanation here on the tab "What is an IR":

                                                 

                                                http://irlibrary.org/

                                                 

                                                All of the IRs I have examined so far are .WAV recordings of a sound source played through the device or in the space the IR is meant to emulate and recorded by a microphone. The convolution program in your DAW then applies the exact response of the device/space/mic modeled in the IR to whatever signal you are running through it, in our case amp models.

                                                 

                                                So while it is possible to make an IR that is a simple EQ curve (by running a tone through an EQ and recording the results then using that recording as the IR in your convolution plugin),  it would seem there is more to most IRs than a simple EQ curve, the first thing that comes to my mind that would be lacking when applying an EQ vs. a proper cabinet IR is resonance...other things mentioned are impedence reactance at the power amp sim

                                                 

                                                On the other hand it may be true, as Madame Sadie wrote: "while there are other factors EQ is still the vast majority of the tone of a speaker cab/mic sim to the listener"

                                                 

                                                The Irotlas clips here http://line6.com/community/thread/55813 which as I understand it were recorded with no cab sim and EQ matching sounded really REALLY great and would seem to be strong support for this argument.

                                                • ClarkKentJob Just Startin' 61 posts since
                                                  Mar 11, 2011
                                                  Currently Being Moderated
                                                  May 27, 2011 4:39 AM (in response to johnnyayyy)
                                                  Re: Better than IR - Match EQ!

                                                  I've known Irotlas since I was 8 years old. He's a friend of mine and I just came from his apartment. I'm the one who told him all about match EQ. After we match EQ'd those clips it didn't take me too long to sell my Axe-Fx.

                                                   

                                                  Trust me... I know A LOT about match EQ. I've also done IR capturing of real amps and cabs. All I know is that IR's don't capture dynamics. Only the EQ spectrum. Phasing... I dunno how there could be phasing after convolution. I know two IR's can be in phase with each other but not a single IR. Anyways... it doesn't affect the IR sound.

                                                  • mtreehugger Just Startin' 195 posts since
                                                    Mar 15, 2011
                                                    Currently Being Moderated
                                                    May 27, 2011 7:22 AM (in response to ClarkKentJob)
                                                    Re: Better than IR - Match EQ!

                                                    Supes, you're a big proponent of IR's for the HD's.  Mind if I ask a simplistic question?  If the hd's could do anything--in the digital realm, that is--is there some option that you could imagine that would be better than either match eq or ir's?  What I'm thinking of is what spaceatl alluded to earlier in this thread (but fell short of suggesting as an outright feature request), which is speaker cab modeling similar to the amp modeling we currently have.  I don't have as firm of a handle on the technical aspects of these discussions as some others do (such as yourself), but my take on it is that both IR capability and Match EQ fall short of what true cab modeling might deliver.

                                                     

                                                    So:

                                                    1) would you concur that this would be a better feature (nevermind that it would take more r&d or may be impossible with the current hd's)?

                                                    2) and/or is there another way, in your opinion, to improve the speaker cab function in the hd's that might be even better?

                                                     

                                                    Thanks!

                                                  • johnnyayyy Iknowathingortwo 1,170 posts since
                                                    Feb 24, 2010
                                                    Currently Being Moderated
                                                    May 27, 2011 12:22 PM (in response to ClarkKentJob)
                                                    Re: Better than IR - Match EQ!

                                                    ClarkKentJob wrote:

                                                     

                                                    I've known Irotlas since I was 8 years old. He's a friend of mine and I just came from his apartment. I'm the one who told him all about match EQ. After we match EQ'd those clips it didn't take me too long to sell my Axe-Fx.

                                                    Yes, I knew you were involved with those clips, originally I almost wrote CKJ" clips then I remembered you had pointed out they were Itorlas'. I should have probably said "Irotlas/CKJ clips"

                                                     

                                                    ClarkKentJob wrote:

                                                     

                                                    Trust me... I know A LOT about match EQ. I've also done IR capturing of real amps and cabs. All I know is that IR's don't capture dynamics. Only the EQ spectrum. Phasing... I dunno how there could be phasing after convolution. I know two IR's can be in phase with each other but not a single IR. Anyways... it doesn't affect the IR sound.

                                                    Yeah the sound of those clips tells me you are probably right.

                                                  • johnnyayyy Iknowathingortwo 1,170 posts since
                                                    Feb 24, 2010
                                                    Currently Being Moderated
                                                    May 27, 2011 12:36 PM (in response to ClarkKentJob)
                                                    Re: Better than IR - Match EQ!

                                                    ClarkKentJob wrote:

                                                     

                                                    I've known Irotlas since I was 8 years old. He's a friend of mine and I just came from his apartment. I'm the one who told him all about match EQ. After we match EQ'd those clips it didn't take me too long to sell my Axe-Fx.

                                                     

                                                    Trust me... I know A LOT about match EQ. I've also done IR capturing of real amps and cabs. All I know is that IR's don't capture dynamics. Only the EQ spectrum. Phasing... I dunno how there could be phasing after convolution. I know two IR's can be in phase with each other but not a single IR. Anyways... it doesn't affect the IR sound.

                                                    So CKJ, when you did the clips with Irotlas you used no cab sims in the HD with EQ matching simulating what the cab would do.

                                                     

                                                    And when M Sadie did the clips provided he or she used the stock cabs with EQ matching.

                                                     

                                                    Which way is best?

                                                     

                                                    Sadie's is a clean tone and Irotlas is heavy, does that make a big difference in which method is preferable?

                                                     

                                                    It seems it would sound more realistic using the cab sims then using match EQ as you would be getting whatever impedence reactance effect and other stuff a proper cab sim adds to the sound, though with the heavy tone maybe it doesn't work as well CKJ?

                                                     

                                                    Did either of you try it both ways? And if you did what was preferable about the method you went with for the clips?

                                                    • meambobbo Iknowathingortwo 1,702 posts since
                                                      Dec 13, 2007
                                                      Currently Being Moderated
                                                      May 27, 2011 2:26 PM (in response to johnnyayyy)
                                                      Re: Better than IR - Match EQ!

                                                      Here the thread with the setlist, where I tried to Match EQ the Pod HD's cabs to the RedWirez IR's:

                                                       

                                                      http://line6.com/community/thread/64575

                                                    • ClarkKentJob Just Startin' 61 posts since
                                                      Mar 11, 2011
                                                      Currently Being Moderated
                                                      May 28, 2011 1:11 AM (in response to johnnyayyy)
                                                      Re: Better than IR - Match EQ!

                                                      Well if we're just talking about the POD HD then IR's would be the easiest way to get amazing tones and I could see custom IR's happening in the near future or POD HD. I'm pretty sure match EQ won't be a part of POD HD... at least any time soon.

                                                       

                                                      About clean/distorted EQ matching: Clean sounds are harder to match EQ. Personally I wouldn't even try it since cabs don't make a big difference in clean tones since you can control it better with the amp EQ controls etc. Distorted tones are easier to match EQ because if you match EQ a section with chords you will most likely be using almost the full spectrum. This means that you can match EQ a cabinet out of a 1 second clip and it will be spot on.

                                                       

                                                      The reason why I wouldn't match EQ Line6 stock cabinets is because they have some frequencies cut out and sometimes match EQ doesn't sound natural if it has to EQ drastically.

                                                       

                                                      But hey... try what works best for you.

                                                  • joehelias Just Startin' 14 posts since
                                                    Nov 12, 2007
                                                    Currently Being Moderated
                                                    Jun 3, 2011 8:19 AM (in response to ClarkKentJob)
                                                    Re: Better than IR - Match EQ!

                                                    A standard IR's is a static snapshot. Its linear and un-dynamic. I think of it a single picture giving a 2D representation of a 3D object in motion. Yeah you can tell what it is but all the depth and motion is not captured.

                                                     

                                                    Real cabs have changing frequency, phase and distortion characteristics based on the harmonic content and volume of the signal passing through it. This is a non-linear response. The only way to duplicate this digitally is with dynamic convolution. This is a much more processor intensive technology that takes multiple snapshots and morphs them together to create a much better representation of things that change over time. The analogy here is a movie (as opposed to a snapshot).

                                                     

                                                    If you want to hear dynamic cab sims check out nebula. http://www.soundonsound.com/sos/feb08/articles/nebula3.htm

                                                     

                                                    Now you can (and many have) argue the relative merits of dynamic convo versus static - such as whether or not it makes an audible improvemnet. I think the jury is out when it comes to cabs (the nebula EQ's and analog saturation clearly sound better than anything digital I've ever heard IMO) but as processor power increases I think everything is headed this way anyway.

                                                     

                                                    As for match EQ. I think its a great tool to get modeled tones as close as possible to already recorded tones. This is a good thing in my book but I don't see it being implemented in the HD. You can do it easily enough in the DAW of your choice.

                                                     

                                                    With regard to the HD I would love more/better cab sims and/or 3rd party IR support.  But at the very least we need a MUCH better EQ option than the crap EQ's we currently have. Ideally I'd like a single global EQ with HI/LO filter or shelf (switchable), at least 2 parametic  bands, numeric display of cut, boost, Q, and frequency(!) and a graphical  interface in L6 edit - you know like the one we had in the XT and X3 but with better sound quality.

                                                    • litesnsirens Iknowathingortwo 649 posts since
                                                      Mar 20, 2010
                                                      Currently Being Moderated
                                                      Jun 3, 2011 8:21 AM (in response to joehelias)
                                                      Re: Better than IR - Match EQ!

                                                      I think the jury is out on whether there is an audible difference because for a select few there is an audible difference.  Everyone likes to think they have the ears of a mastering engineer, but select few do, that's why those guys get the job and why the the rest ( the smart honest ones anyway) send their mixes out of house to be mastered.  The placebo effect can do amazing things for us, "wow this extra processing sounds way better".  In reality some advancements in technology make a big difference some don't.   Some you will come to appreciate over time.  But despite the 2D effect as you put it ... Alot of that can be made 3D by the fact that the music we play through that sim is dynamic and flowing like a movie, so it would take real critical ear to hear the subtle changes in phase etc, especially when not beside an actual cabinet spitting out the same material.

                                                      • joehelias Just Startin' 14 posts since
                                                        Nov 12, 2007
                                                        Currently Being Moderated
                                                        Jun 3, 2011 8:38 AM (in response to litesnsirens)
                                                        Re: Better than IR - Match EQ!

                                                        For the cabs I agree. There was a lengthy discussion about the merits of Nebula dynamic cabs versus Static IR's in one of the forums. The guy responsible for some of the AXE-FX and Redwirez cabs (who is definitely a heavy hitter when it comes to all things speaker related) made the argument that static IR's are fine and that the dynamic cabs didn't really impress him.Then again I doubt the nebula folks went into as much detail with their dynamic IR's as, say, redwirez did with their static IR's. So maybe the comparision isn't truly apples to apples.

                                                         

                                                        Now if we are talking about EQ and analog saturation.. well... Nebula is getting ALOT of well deserved attention in this area. I don't think the improvementt over algorithmic based plugins is negligible. Nebula sounds clearly better (much closer to analog gear) to my ears and I believe that it or something like it will be the future of digital simulation for all things analog.

                              • johnnyayyy Iknowathingortwo 1,170 posts since
                                Feb 24, 2010
                                Currently Being Moderated
                                May 25, 2011 3:15 PM (in response to mdme_sadie)
                                Re: Better than IR - Match EQ!

                                mdme_sadie wrote:

                                Maybe I'll have to slap together a little audio demo.

                                Please do!

                  • SWoRd Just Startin' 48 posts since
                    Jun 5, 2008
                    Currently Being Moderated
                    May 25, 2011 12:13 PM (in response to meambobbo)
                    Re: Better than IR - Match EQ!

                    Great ... I'm looking forward to trying out your improved EQ's on my setup.

                     

                    Best regards

                    Soren

    • mtreehugger Just Startin' 195 posts since
      Mar 15, 2011
      Currently Being Moderated
      May 24, 2011 10:24 AM (in response to tommasi)
      Re: Better than IR - Match EQ!

      "It doesn't even need to be a facility available in the unit itself; it could be implemented into HD edit as a means to configure the onboard EQ (and besides, it might be tricky to put a sample onto the unit itself)"

       

      This makes the idea kind of a no-brainer IMO.  Any tone that would be matched would be a clip stored in one's computer anyway, so we'd just click on the Match EQ button in EDIT and then save the patch.  The restriction here is that the pod would need to be able to play what the computer determines as the tone, which might mean a new "Match EQ" effect (for lack of a more marketable term) for the HD is required in order to play back the tone.  Be that as it may, IMO it seems to make a lot more sense to do the actual matching in our computers rather than in our pods.

  • FrugalGuitarist Just Startin' 95 posts since
    Mar 3, 2008
    Currently Being Moderated
    May 24, 2011 11:14 AM (in response to mdme_sadie)
    Re: Better than IR - Match EQ!

    This type of tech has been around for a while and is a very usful tool for mastering engineers trying to ensure album EQ continuity. For me personally, I'm not interested in it for guitar usage as I don't spend any time at all trying to match specific artists. I don't even download patches off Custom Tone. I prefer simply dialing things until they meet my own personal tonal needs. But perhaps I'm in the minority on this one...

  • kdog Just Startin' 34 posts since
    Jan 25, 2007
    Currently Being Moderated
    May 25, 2011 4:11 PM (in response to mdme_sadie)
    Re: Better than IR - Match EQ!

    FWIW, from a theoretical standpoint, a convolution impulse response algorithm is in essence a super complex EQ matcher. It just uses a well understood, well documented, and (somewhat) easily reproducable method that mathematically, produces exact duplication of a speaker, mic (and sometimes room) combination with an arbitrary degree of accuracy.

     

    So, from a cabinet modeling perspective, unless you could dynamically adjust the IR (I think the AxeFX II has some clever features along this line, swapping IRs in and out) there is basically nothing that is "better" at cabinet modeling a specific speaker cabinet + mic than a convolution IR cabinet modeler, because a speaker cabinet is a linear time invariant system: the convolver completely reproduces the response of the measured system to an arbitrary level of accuracy. This is a well researched area of signal processing.

     

    So, in terms of cabs, anyway, you guys are ignorant if you think additional EQ > custom IRs for getting good cabinet modeling (which is KEY to a good guitar sounds, IMHO). An IR basically gives a perfect EQ for a speaker+mic setup with the minimal effort.

     

    What you REALLY WANT for total flexbility is custom IRs + sufficient additional EQ to tweak and nuance the base tone provided by the modeled amp+cab system. Fractal's stuff (the AxeII really has a lot of niceties for this kind of thing wrt 3rd party IRs) and the Eleven Rack have both of these with sufficient power to provide the kind of flexibility I'm talking about, as do most of the VST based software modelers.

     

    Soft IR cab models are HUGE. L6 REALLY missed the boat on that (to date, anyway, hopefully it'll be an update) in this go around. If I were designing @ Digitech, Peavey, Roland or another competitor, that would be at the top of my list for key features to differentiate any new competing products.

     

    Like most creative artists, I don't want a dead bang copy of someone else's specifc sound. I want a genuinely accurate and authentic modeler that sounds and feels like a real collection of amplifiers.

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