[sdiy] Glide circuit, how possible?

[john mahoney]

----- Original Message ----- 
From: "harrybissell" <harrybissell at prodigy.net>


> Hmmm... I was thinking more of the dithering idea, which I have admitted I
> stole from Grant, so you can steal the Vactrol idea no problemo...

Okay, thanks! ;-)


> The dithering idea is to switch between adjacent resistors with the
4051...
> the resulting "average" resistance would morph from one value to the next.
> what this would do to the audio of the Wah pedal remains to be seen. A
simple
> test could be two resistors and a 4016 switch, modulated by an ultrasonic
PWM
> circuit.

Might sound like a VCF being modulated by a square wave. As you say, test it
and see (or hear, as it were).

Now that I mention VCFs, it occurs to me that it would be easier to use a
bandpass VCF instead of a wah-wah. (Forget that if the goal is to have the
sound of a specific wah, though.)

Wacky idea: Use a servo (like for a radio-controlled model) to turn the wah
pot. A servo would be faster than anyone's foot action, I think.
--
john