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How does Chorus work?
Posted: Wed Dec 21, 2011 10:10 am
by grokostimpy
I know what a chorus does, but can anyone explain the circuit design that makes a chorus happen in simple terms? I'm an amateur hobbyist when it comes to circuit design, but I'm curious what the major difference is between, for example, an Analogman, a Small Clone, and a Boss... Why is it that some chorus' sound different/better besides component quality?
Thanks guys.
Re: How does Chorus work?
Posted: Wed Dec 21, 2011 10:26 am
by Scruffie
It takes a slightly delayed version of your signal (30 or so mS from memory) the wet, then it 'modulates' that delayed signal via an LFO or other source and then it mixes it back in with a bit of your dry signal.
The differences between a Small Clone & CE-2 will be LFO Wave Shape & Delay time mainly. The difference between an Analog Man and a Small Clone is a Depth Control mod & Mojo.
Component quality plays very little in it. 'Better' may include improved low pass filtering or companding, both used to supress noise and other follies of using a BBD Chip which are an old technology. Also the chip used, the 3007 (used in many choruses) has a better headroom IF it's used at higher voltages (up to 15V) where as the 3207 runs happier at are usual stompbox voltages of 9V but can't take higher voltages.