[sdiy] Filter frequency cutoff with linear response?

[dan snazelle]

On Feb 19, 2012, at 3:32 PM, Olivier Gillet wrote:

>> The (linear) filter FM discussion is interesting though. A few
>> hardwired synths have the possibility to modulate the VCF in the audio
>> range with VCOs (Prophet poly-mod style). This is an important way of
>> expanding the VCO-VCF-VCA architecture possibilities. But is there any
>> of these synths that does this VCF modulation linearly?
> 
> The Doepfer Dark Energy does it.
> 
> Olivier
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> 


I might as well plug my own product ;)

The Snazzy FX "Tracer City" filter box has the option to route CV or audio signals to the filter cutoff (there is an onboard oscillator which can go LFO or Osc range...as well as an envelope
follower and psuedo random modulator and Two 1/4 jacks in the back for inputting audio or CV)


ALLl such modulators/jacks can be switched to provide Linear or Expo modulation of the filter

 (there are a bunch of toggles labelled A/B to serve this purpose)

this is the one feature of the box that few people seem to understand and or use!

http://snazzyfx.com/tracercity.html