[sdiy] VCA controls

[Cynthia Webster]

How about a switch for AC or DC coupling?

If supported by the right circuitry the VCA would also be able qattenuate
control voltages?

And if so, then you might like another switch between a linear and
exponential control voltage...

and what about pots to attenuate the CV inputs?

and LEDs, And what about a built-in electric pencil sharpener?  :)

Cynthia

>
> on 5/9/02 6:53 PM, Scott Bernardi at sbernardi at attbi.com wrote:

> For a VCA, about the only control that makes sense is a master level
> control.  If you're using an OTA to make the VCA, just put a log pot in
> the feedback loop of the opamp it feeds.  Example:
> http://home.attbi.com/~sbernardi/elec/og2/og2_dual_linear_vca.gif
> 
> Tim Ressel wrote:
> 
>> Yo,
>> 
>> I'm Laying out the front panel for my VCA, and unlike
>> the other modules, this one doesn't have any controls
>> right now. The front panel looks kinda empty. I was
>> going make it a dual, just to fill in space. But
>> instead should I add some controls? If so, what
>> controls?
>> 
>> I know you all hate to give out your opinions...
>> 
>> ;-)
>> 
>> --TR
>> 
>> __________________________________________________
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> 
> --
> Scott Bernardi
> sbernardi at attbi.com
> 
>