[A6] all jacked in

[Rhen, Kris]

> > Doing that would give you series filters, but for formant 
> stuff like the
> > Syrinx you need parallel BP filters, so that wouldn't work, 
> but it should
> > give you a nice unique cutoff slope ;-)
> 
> You sure the Syrinx is parallel?  I seem to remember that cranking any
> of those filters too much really cut down the Syrinx sound.  
> I know the
> final LP filter sounded like it was in series after the 2 BP filters.
> I'll have to power up the Syrinx tonight and check (or look at the
> schematics...)
 
If it does formants, then it must :-)  Think of it this way.  Put one PB
filter at 20Hz, another at 4000Hz and another at 10kHz in series; they'd
filter each other out and you'd end up with nothing.  I suppose in series
they could still be useful if their cutoffs were sufficiently close, but
everywhere I've heard of formants, its been parallel filters.

According to:

http://www.synthmuseum.com/synton/syrinx01.html

the filters can be patched in multiple ways...

Here's the info on the Doep formant filter:

http://www.doepfer.de/a104.htm

KRIS