[sdiy] Dumb PWM question

[harrybissell at wowway.com]

I don't think it could be considered two different frequencies...
but looking at only one cycle you could never tell. They would be
beating if they are different...

H^) harry




On Tue, 26 Feb 2008 16:06:14 -0600, Tim Daugard wrote
> Harry said:
> 
> > The raphs look like unequal (and voltage controllable)
> > gains for signals of positive and negative polarity
> > with respect to ground.
> 
> I agree. My first thought was two run the signal through a single 
> sided log amplifier. This would change the slew rates depending on 
> the amplitude of the signal.
> 
> > That could be done quite easily, anyone with a big
> > modular probably has all the circuits they need right now...
> 
> Agree with this also. On further consideration of the orginal 
> posters drawing, I believe that the signal is two triangle waves of 
> different fundamental frequencies with a variable PRT. I think it 
> may sound like a ring modulated signal with the modulation signal 
> harmonicily related to the orginal signal. F modulating 2F maybe? 
> Relatively easy to do with my system.
> 
> > Still bet it sounds like s**t
> 
> Who knows - waiting for the orginal posters response.
> 
> Tim
> 
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Harry Bissell & Nora Abdullah 4eva