Filter ICs and crossfade circuits

[Andrew Schrock]

On Tue, 25 May 1999, Paul Maddox wrote:
> >Yeah.. I actually want to do a QUAD VC-crossfade circuit, with the audio
> >inputs amplitude controlled by default with a joystick. When C/V is
> >inserted, it bypasses the voltage output by the joystick. This would be in
> >my mind beautiful for mixing, say, HP/NP/LP or saw/tri/pulse/sine outputs.
> hehehehe, anyone heard/seen of the prophet VS?
> I started to design this, uses 6 VCA's... My idea was a panel with four 
> sockets for input one for output, two CV and a joystick, I also intended to 
> include a sin+cos LFO, so you could feed these into the X/Y and have it 
> rotating through the inputs, kinda like a LisaJou (sp?) figure, but with 
> audio...
> I stopped when I got my uController kit to make my poly midi>cv convertor 
> (which, BTW, is going quite well so far)

Wacky stuff! 

Still, nobody has addressed the problem.. will use of a log or linear VCA 
make any difference with panning? (to my fairly unsensitive ears) 

Gotta go find more front panels for all this homebuilt madness. 

Andrew

-| Andrew Schrock | aschrock at cs.brandeis.edu |-