[sdiy] Voltage-controllable parametric EQ and other goodies

Neil Johnson neil.johnson71 at gmail.com
Tue Jun 25 11:06:05 CEST 2013

On 25 June 2013 08:43, cheater00 . <cheater00 at gmail.com> wrote:
> On Tue, Jun 25, 2013 at 8:24 AM, David G Dixon <dixon at mail.ubc.ca> wrote:
>>> Can the SSM2164 invert at all?
>> No.
> That's what I gathered from the PDF. I was wondering if there's a
> trick, but if you say there isn't then I believe you.

It is possible to build a 4-quadrant VCA with the 2164, but you need
two gain cells, and you lose the expo response.
If you want to keep the expo response things get more complicated.


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