Mon Jan 17 11:23:17 EST 2011
Chopper techniques (Envelope?)
Coming back to the Envelope generator problem. I one of the
approaches I proposed, it is necessary to compensate for low offset
voltage. The main idea is that you want a VCA controlling current to
decay to zero very accurately instead of an offset voltage.
EDIT (Wed Sep 28 15:14:15 EDT 2011): The main idea behind going
through the trouble of making analog synth circuits is to get the
those cool sounding nonlinearities for free, without any digital,
unnatural sounding aliasing artifacts. A chopper is a sampled system,
so might alias. However, when it's used in a linear part of the
circuit it shouldn't matter.