[sdiy] Wavetable info

David Cornutt cornutt at hiwaay.net
Tue Jan 6 05:19:15 CET 2004


On Monday, January 5, 2004, at 03:29  AM, Paul Maddox wrote:

>
> I disagree, I like the aliasing associated with synths such as the PPG 
> and
> Prophet VS, its part of their character/sound, to say 'don't do 
> something'
> is wrong, if you like the sound, how can it be unpleasant?

Well, I don't like the sound... Remember that the S-750 is 48 KHz
and 16-bit.  It's all but impossible to drive it into aliasing.  If you
try, you just get some particularly unpleasant (and ear-splitting)
high-frequency noise.  And I don't mean tones; I mean noise, as
if you ran white noise through a hipass filter and turned the resonance
all the way up.  It hurts to listen to.  If the S-750 did alias, it 
would
be better off in some circumstances, but the designers went to huge
pains to avoid that.  In fact, they even have a "rate convert" function
that you can use to down-sample, and it does all the nice filtering
and interpolating automatically so that it never aliases. :-) or :-( 
depending.

> In fact, in both the Monowave and MonowaveII I added a feature to 
> allow you
> to drop the sample rate of the waveform to increase the high frequency
> content!
>

Hmm... I may have to try sucking some samples over to the Mac
and see if I can write an "ugly" down-sampling program.  Could
be interesting.



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