robberns Posted July 9, 2017 Share Posted July 9, 2017 Kind of baffled why I don't see the Rotary effects available under Modulation in most presets. Even tried starting some from scratch. I'm guessing it is a DSP issue, but is there a place to start where I can actually see the 3 Rotary options? Help! Quote Link to comment Share on other sites More sharing options...
Dshow Posted July 9, 2017 Share Posted July 9, 2017 Maybe you're looking in the Mono Effects? Rotary is in the stereo effects list. Quote Link to comment Share on other sites More sharing options...
robberns Posted July 9, 2017 Author Share Posted July 9, 2017 You know, I never thought of that. Doh! Thanks, I'll go try it now. Quote Link to comment Share on other sites More sharing options...
zooey Posted July 9, 2017 Share Posted July 9, 2017 What's even odder is that it's not a cab... Quote Link to comment Share on other sites More sharing options...
robberns Posted July 10, 2017 Author Share Posted July 10, 2017 Pilot error on my part, I never thought of looking in the stereo section. And there they are. Would make more sense as a cab, but atlas i found them. Thanks Gear Head! Quote Link to comment Share on other sites More sharing options...
jbuhajla Posted July 10, 2017 Share Posted July 10, 2017 What's even odder is that it's not a cab... I think because the parameter set more matches a modulation type effect rather than the cabinet parameter set, and the rotary is probably not an IR like the cab models are. That is pure speculation on my part though. Quote Link to comment Share on other sites More sharing options...
HonestOpinion Posted July 10, 2017 Share Posted July 10, 2017 I think because the parameter set more matches a modulation type effect rather than the cabinet parameter set, and the rotary is probably not an IR like the cab models are. That is pure speculation on my part though. This^^^. The rotary effect on the Helix is like any of the many separate pedals that can be purchased that emulate a Leslie. It would be cool to see IRs in the future that have accurately modeled a Leslie. I would bet that those IRs would have to be a lot larger file size and of longer duration to capture this effect faithfully if it is even possible. They might require a different kind of IR implementation as well. Quote Link to comment Share on other sites More sharing options...
amsdenj Posted July 10, 2017 Share Posted July 10, 2017 An IR could capture the response of the Leslie horn and speaker, but not the rotational effect. That requires separate algorithms. We may find that adding those algorithms to traditional guitar speaker IRs could open up possibilities for new Leslie tones. Quote Link to comment Share on other sites More sharing options...
gf_rtmd30 Posted June 9, 2020 Share Posted June 9, 2020 (edited) On 7/10/2017 at 3:47 PM, amsdenj said: An IR could capture the response of the Leslie horn and speaker, but not the rotational effect. That requires separate algorithms. We may find that adding those algorithms to traditional guitar speaker IRs could open up possibilities for new Leslie tones. This got me reading about IRs, which led to "The Working Guitarist: All About Impulse Responses" and then to "Convolution reverb" which mentions: Quote In electronic music convolution is the imposition of a spectral or rhythmic structure on a sound. Often this envelope or structure is taken from another sound. The convolution of two signals is the filtering of one through the other. So, it looks like it's already a thing, it's just not implemented in Helix, but, given sufficient DSP power I'm sure it could be. It'd definitely be interesting to hear. Edited June 9, 2020 by gf_rtmd30 learned more Quote Link to comment Share on other sites More sharing options...
SaschaFranck Posted June 10, 2020 Share Posted June 10, 2020 18 hours ago, gf_rtmd30 said: This got me reading about IRs, which led to "The Working Guitarist: All About Impulse Responses" and then to "Convolution reverb" which mentions: So, it looks like it's already a thing, it's just not implemented in Helix, but, given sufficient DSP power I'm sure it could be. It'd definitely be interesting to hear. Convolution reverbs aren't able to capture a Leslie, either. Anything non-linear can't be captured by typical IRs. 1 Quote Link to comment Share on other sites More sharing options...
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