[sdiy] Attempting the impossible?? Detuning waveforms?

[harrybissell]

Usually sub octaves are made by digital division (divide by two or four).

If so, you cannot directly detune them, they are phase locked.

You could synthesize a sawtooth wave, then make a 'sawtooth phase shifter'

(see Magnus' site).  These could give an 'animated' effect though it would

NOT be truly detuned.

Or you could do a phase-locked loops (see Scott Gravenhorst's 'Fatman'
pages).
It will take some time to follow a new frequency input, but that might
make it more
animated. The PLL will try to lock exactly as well, you would have to add
some
CV to force it to unlock.

The easiest way would probably be to build a second VCO...

H^) harry

Jeff Farr wrote:

> Ok, I've got myself a kitten here (not the furry kind).  It has only
> one osc, But each waveform has a volume slider before being sent to
> the filter.  It's also got a sub osc, and a sub-sub osc.  I've already
> added the Op-Amp circuits to patch out the inputs to the filter and
> it's modulation sources, and added an individual out for each waveform
> (and sub).  I'm currently working on adding a VCLag to turn the
> normally square subs into triangles and other funky shapes, I prefer
> the more suble harmonics of a tri for subs and the sub-sub makes a
> cool 'harmonic' audio freq LFO.  Now, what would be MEGA cool is being
> able to detune each waveform slightly for a thicker string sound.
> Even better to detune the sub-sub as a LFO.  Is this even possible?