[sdiy] Four-pole filter with vactrols (new student project video)

Antti Huovilainen ajhuovil at cc.hut.fi
Sat May 1 21:44:36 CEST 2010


On Sat, 1 May 2010, Aaron Lanterman wrote:

> I switch the cutoff frequency CV signal from a triangle to a square wave 
> - it doesn't seem to instantly snap from one tone to another, there's 
> like a decay; you can can hear it and see it on the scope.

If you check the vactrol datasheets, they specify turn-on and turn-off 
times which can be quite long. What you're seeing is likely the result of 
those.

Antti

"No boom today. Boom tomorrow. There's always a boom tomorrow"
   -- Lt. Cmdr. Ivanova



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