Re: [sdiy] Adding offset to vactrol??

[rdrake]

google for the data sheets for any vactrol; neither the response curve nor the current-to-reistance curves are linear on any of those commonly used for sdiy.

>----- ------- Original Message ------- -----
>From: ajhuovil at cc.hut.fi
>To: lanterma at ece.gatech.edu
>Sent: Wed, 4 Jun 2008 +0300 (EEST) 22:41:04
>
>On Wed, 4 Jun 2008, Aaron Lanterman wrote:
>
>> It seems to get anywhere close you'd have to
>split the audio signal up into 
>> different bands, and apply a different VCA to
>each band, each with its own 
>> slew.
>
>Vactrols are linear (for the audio signal), right?
>I have a hard time seeing how such effect could
>result from a linear 
>device. Now, all kinds of nonlinear filtering of
>the control signal I can 
>believe.
>Does anyone have actual measured curves of a
>typical vactrol?
>
>Antti
>
>"No boom today. Boom tomorrow. There's always a
>boom tomorrow"
>   -- Lt. Cmdr. Ivanova
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