[sdiy] Wavetable info

Paul Maddox P.Maddox at signal.qinetiq.com
Tue Jan 6 10:26:48 CET 2004


David,

> If the S-750 did alias, it would
> be better off in some circumstances, but the designers went to huge
> pains to avoid that.

ok, at this point perhaps we ought to try and define aliasing..
There are TWO types..

1) Aliasing due to frequencies beyond the sample rate (always nasty) and,
2) aliasing due to lower sample rate waveforms and hence added harmonics
(sometimes good).

For example the MonowaveII can add harmonics by lower the sample rate for
each waveform (2),
but at high frequencies of note, it suffers a little from number (1).

The MonowaveI doesn't suffer with (1) because its NOT a fixed sample rate,
its a variable sample rate. Infact the oscillators run at upto 1Mhz for the
sample rate.

Paul



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