[sdiy] Stereo Phasing With the 32 Stage MultiPhase Project

[René Schmitz]

Hi Scott,

How are they controlled, are you again using an expo? (Well, I guess you 
do. And I guess I know how it would look. :-P) Yet the hypertriangle 
makes such a huge difference.

> There's enough of a difference that,
> with identical settings on each channel, there will still be a stereo
> effect even if the channels are not modulated antiphase.

I think with that many stages this is something one needs to live with 
to some degree, or else you need a huge pile of vatrols to select those 
32 which have good pairing over the entire range.

> I've got one nearly finished for the audio path - it just has a few
> elements I'm not sure I want to keep or leave out.  The CV - ooooh,
> not even started.  Right now I'm just using LFO's and a mixer from
> the modular.  I'm running a triangle LFO through a FET distortion
> circuit to get the hypertriangular wave.  Not sure if I want to stick
> with that or try some other method.  In any case, 'inverted'
> hypertriangular (keeping the timing anti-phase but preserving the
> waveform) will require an inverted copy of the original triangle and
> then distortion of that.

I see the hypertriange simply as a transform that you put pre to one sum 
on the modulation inputs. And add those optional invertors prior to 
them. Maybe adding more signals before, or after them, since this is a 
nonlinear thing, that makes a difference of course.

Cheers,
  René

-- 
uzs159 at uni-bonn.de
http://www.uni-bonn.de/~uzs159