[sdiy] Re: OTA nonlinearities

[Nils Pipenbrinck]

> Hmm.  "feedback loop".  I think Martin Czech pointed out
> that digital pots have a problem of granularity at the
> low end.  If one of these were used in the feedback loop
> of an amp, would this not reverse the effect?  If so, would
> it be just as bad to have this granularity at the high
> end?  Somehow I think it would be better.  No expert here,
> this is a question more than anything.

There are of cause digi-pots with logarithmic curve.. especially for audio
stuff.. So when I go for digipots I'll pick a logarithmic one..

Nils Pipenbrinck