[LAU] Auto-Wah and Clav... not quite

[Gordon JC Pearce]

On Thu, 2009-07-09 at 10:24 -0700, Ken Restivo wrote:

> Hmm, thanks. Well after digging into it a bit, it seems as though a
> proper "wah" effect is an LPF with a resonant peak at the rolloff
> point:
> 
> http://www.geofex.com/Article_Folders/wahpedl/wahped.htm
> 
> Apparently very easy to do in hardware (2 transistors, couple caps,
> and an inductor), but I'm not sure where I'd find a LADSPA plugin with
> this particular frequency response characteristic.

Not *quite* so simple, because the resonance increases as you sweep the
frequency up.  You're increasing the gain of the amplifier quite a
bit...

Gordon MM0YEQ