[PD] Max Smoother Audio than Pd?

Roman Haefeli reduzierer at yahoo.de
Sun Mar 28 16:03:33 CEST 2010

On Sun, 2010-03-28 at 15:37 +0200, Matteo Sisti Sette wrote:
> Roman Haefeli escribió:
> > On Sun, 2010-03-28 at 14:14 +0200, Derek Holzer wrote:
> > 
> >> Generate bandlimited waveforms. Works for lower frequencies, however 
> >> higher frequencies will still alias...
> > 
> > Why is that? I thought, when just playing so many partials of the
> > waveform, so that all of them fit in below the nyquist frequency, there
> > won't be any aliasing? Is that wrong?
> I don't think it's wrong. Obviously, if you generate only ONE table 
> (with sinesum for example) with all the partials necessary for using it 
> at low frequency, and then use it at higher frequencies, it will alias. 
> But if you use different tables for different frequencies, always 
> summing only the sines that are below the nyquist frequency, there can't 
> be any aliasing.

Thanks for clarification, Matteo and Derek. This is actually what I
initially thought as well, but the sentence 'however higher frequencies
will still alias' sounded to me, as if more measures would be necessary
in order to get completely rid of aliasing, which would have been unkown
to me.


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