[sdiy] oscillator jitter / phase noise

[Glen]

At 08:15 AM 6/3/04 , Richard Wentk wrote:

>I've tried adding various kinds of random modulation to digital 
>oscillators, but as yet nothing has done much to transform the sound. I 
>suspect it's really more to do with waveshape and waveshape variability.

Have you tried modulating the sample rate? I don't mean to resample a
waveform in software, only to spit it out through your computer sound card,
at a fixed sample rate. I mean to vary the actual hardware sample rate of
your DAC. I believe some sound cards can lock onto an external clock
signal. If so, feed it a modulated clock signal of your own design. Would
that work? It would be a more hardware-oriented approach, and depending on
your clock design, it could still be under software control.


later,
Glen
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