On Monday 04 January 2010, Michael Hawkins wrote: > An alias that was the result of an infinitely low sampling rate > would "resemble" noise. > > No? No. It would resemble DC. :-) If you're curious why this happens, the "natural" reconstructed signal in this case lies between DC and the sampling frequency, which is infinitesimally close to DC. You could reconstruct the signal alias in any of the image bands as well, but then it would again be a perfect sine since the bandwidth of the reconstruction filter has to be infinitesimally small. There have been several attempts at creating "true random" signals by sampling from an ensemble of oscillators. None of them work particularly well unless they're followed up by considerable digital processing. Achim. -- +<[Q+ Matrix-12 WAVE#46+305 Neuron microQkb Andromeda XTk]>+ Wavetables for the Terratec KOMPLEXER: http://Synth.Stromeko.net/Downloads.html#KomplexerWaves
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Re: [korgpolyex] Random sample and hold - please explain
2010-01-04 by ASSI