[sdiy] VCA - linear vs. expo control, digital modulation source

[David G Dixon]

If you use a 2164 as the VCA, then it already has exponential response and
the 12-bit DAC would be perfectly adequate. 

> -----Original Message-----
> From: Synth-diy [mailto:synth-diy-bounces at dropmix.xs4all.nl] 
> On Behalf Of sleepy_dog at gmx.de
> Sent: Thursday, August 04, 2016 6:16 AM
> To: synth-diy at dropmix.xs4all.nl
> Subject: [sdiy] VCA - linear vs. expo control, digital 
> modulation source
> 
> Hey there SDIYers!
> 
> If I want to control a VCA of a synth voice, like typically 
> after the VCF, and the source of the control signal is an MCU 
> with a 12-bit DAC.
> Is the 12-bit resolution enough to control a VCA with linear 
> control circuit even if I'd like to use (perhaps switchable) 
> exponential curves generated in software, or might this be 
> too chunky in some regions and I'd be significantly better 
> off using a VCA with exponential response?
> 
> Thanks in advance,
> Steve
> 
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