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Delay Time.


titchyblackcat
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You probably can't tell a delay difference at 10,000 nths of a second.

 

From: http://www.soundonsound.com/sos/1995_articles/apr95/digitaldelays.html

 

 PHASING

Early phasing on records was done with two tape machines playing almost in sync. Nowadays, we tend to refer to this effect as tape flanging, but in the days when it was actually used, everyone knew it as phasing.

It's a simple matter to convert the earlier vibrato effect to phasing by setting the mix control to exactly half way; the best effects are obtained with delay times of between 1 and 10mS. With such a short delay time, the individual harmonics that make up your sound are moved in and out of phase with each other so that some cancel while others add. This has the effect of filtering the sound in a very dynamic and complex way -- you'll recognise the effect as being similar to that produced by guitar phaser pedals. Try changing the rate control from a slow sweep to a fast modulation and you'll see that the range of effects is quite wide. A very slow modulation rate generates a nice, evolving sweep which can sound great on pad keyboard sounds, while faster rates can sound similar to a rotary speaker cabinet.

You can also 'tune' which harmonics are affected by changing the basic delay time; the shorter the delay time, the higher the frequencies that are affected, and vice versa. A delay time of between 1 and 3mS gives a thin, whining phase sound, whereas longer times sound fatter or smoother.

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