[sdiy] Multiple oscillator detuning

Paul Schreiber synth1 at airmail.net
Mon Dec 10 00:07:59 CET 2012


What a module with 8 detuned VCOs might be like:

http://www.analoguehaven.com/synthesistechnology/e340/

These are detuned exponential.

Paul S.



-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Tom Wiltshire
Sent: Sunday, December 09, 2012 4:44 PM
To: synthdiy diy
Subject: [sdiy] Multiple oscillator detuning

Hi All,

I'm currently playing with a chip generating multiple oscillators, detuned
into a big fat cloud of sound. I've got that working. It's a big fat cloud.
Now I'm working on the niceties - making it sound really good.

Now, it seems to me that there's a *lot* of ways you could do detuning. I've
got 5 oscillators, so I've got a a few options.
For a start, I could either use linear detuning (Hertz) or exponential
(cents). I could detune each oscillator by some ratio to the others, or I
could detune by some prime number to avoid any ratio between the
oscillators.

The detuning itself is scaled by a "Detune Amount" control, so any variation
can be pushed from zero up to some upper limit. That adds another query -
how much detune is reasonable? I suppose various "rave hoover" sounds
suggest the answer to that one is "more than you think is reasonable!"

Has anyone played with this kind of thing and got any advice to offer?

Thanks,
Tom


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