On Thu, Jul 09, 2009 at 10:25:49AM -0600, Ernie Dulanowsky wrote:
  What about using separate envelope follower and filter
plugins to make your
 own auto-wah ?
 cheers,
 ernie
 On Wed, Jul 8, 2009 at 8:24 PM, Ken Restivo <ken(a)restivo.org> wrote:
 > For several years I've lusted away over the Clavinet-through-Auto-Wah
 > sound: the Stevie Wonder sound (also used notably by Herbie Hancock,
 > Medeski, Martin and Wood, and others).
 >
 > The problem is that either the LADSPA auto-wah plugin doesn't quite cut it,
 > or the Clav soundfont I found on Hammersound several years ago doesn't have
 > enough dynamic range to really make the thing "wah" in any noticeable way.
 >
 > Am I doing something wrong here, or is the plugin not quite the best
 > implementation, and if so, are there any better ones? Likewise with Clavinet
 > soundfonts too.
 > 
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.
Looks like Rakarrack has a wah, and "alien wah" (from Zyn?) and an auto-wah of
its own. I'll try those instead.
-ken