volt control of osc triange tilt?

[Fraser, Colin J]

> -----Original Message-----
> From: Caloroso, Michael E [mailto:CalorosoME at corning.com]
> Sent: 09 November 1999 14:46
> To: '[*Synth-DIY]'
> Subject: RE: RE: volt control of osc triange tilt?
> 
> The CEM3396 has two oscillators - Pulse and Wave.
> 
> The waveshape control input changes the Wave between a 
> triangle and ramp, but according to the spec sheet it does 
> indeed tilt in only one direction.  It has no effect on the Pulse.


This has me thinking...
Would it make any difference if it could tilt all the way ?

You would get the same harmonic content with the same deviation from the
triangle starting point, tilting either forward or backward - one wave is
just the other in reverse.

Would applying a rectified modulation waveform to a vco with only unipolar
modulation of tilt sound the same as applying the same modulation waveform,
unrectified, to a bipolar tilt input ?

Would this also apply to PWM ?


Colin f