[sdiy] Zipper Noise and how to remove it

[Metrophage]

--- "David J. Hughes" <hughes_david_j at btopenworld.com> wrote:
> Does anyone have any idea how to eliminate zipper noise, particularly
> in, say, MIDI Volume controls?
> 
> Any software/hardware solutions would be most appreciated.
> 
> Thanks
>     David

Any basic slew-limiting / portamento circuit should be able to smooth
the zippers away, though I don't know if it'd be worthwhile for very
rapidly-changing voltages. Basically you're probably looking for a
two-amp comparator with a large-valued pot between them.

Of course, increasing the resolution of your DACs wouldn't hurt either!
I will be making some of these unzippers myself soon, as I got an older
MIDI-CV unit which is probably going to sound a bit coarse.

CJ


		
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