[sdiy] RE: Polyphonic synthesizer (controlling with vactrols)

[Andre Majorel]

On 2002-04-22 18:10 +0300, mikko.a.helin at nokia.com wrote:

> Nice synth! I've been recently playing with Linux and I'm
> considering to build a poly synth with the digital software
> oscillators and analog filters.

For waveforms such as sawtooth, square and triangle, software
oscillators are hard. If the frequency is not a whole
submultiple of the sample rate, aliasing occurs. Unless you
generate the wave form additively, and that can be quite costly
in terms of CPU for low fundamental frequencies (at 50 Hz, there
are 400 harmonics).

  http://www-ccrma.stanford.edu/~stilti/papers/blit.pdf

-- 
André Majorel <URL:http://www.teaser.fr/~amajorel/>
std::disclaimer ("Not speaking for my employer");