understanding some terms and theory

[Paul Maddox]

Paul,

>
>This method would be the simplest and cheapest to implement, but 
wouldn't it
>be more common for the clock frequency to remain constant (44.1kHz or
>whatever) and use some scaling algorithm to derive the output waveform 
from
>the wavetable data? That way the output from the digital oscillator 
could
>remain digital for effects processing and S/PDIF outputs etc.
>


woooooa....
Yes, but for this you need a processor and a quick one at that. you also 
(in theory) loose the quality of the sample as its played higher.
If you want something that works and works well, keep it simple..
PPG did this, I did this (No processor in mine) and also digisound did 
this with their digital wave oscilator, it used a CEM3340 at high speed 
(wish you could still get these it would make life sooo easy).

If you want to keep everything digital yes, you would need processing 
and interpolation of samples and such, but why? surely your SPDIF hits 
analog at some point? doen't you listen to it?

dont get me wrong digital audio has its place, CD's, Major studios and 
such, but for the average diy'er (most of us on the list) its 
excessive.. 

>Paul.
>

Paul (land of happyness and wavetables) Maddox



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