Wednesday, September 16, 2009
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© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
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MATRIXSYNTH - EVERYTHING SYNTH
© Matrixsynth - All posts are presented here for informative, historical and educative purposes as applicable within fair use.
MATRIXSYNTH is supported by affiliate links that use cookies to track clickthroughs and sales. See the privacy policy for details.
MATRIXSYNTH - EVERYTHING SYNTH
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This video clearly shows there actually IS aliasing present. As the harmonic partials move up in frequency, the highest partial gets reflected from the Nyquist frequency and folds back to the audible range and shifts in the opposite direction.
ReplyDelete/\ Sure, but the aliased partial is already below -65dB by the time it reaches 20kHz, and it's all but gone at 10k. That represents rather good antialiasing.
ReplyDeleteBut I can see from the scale it's rather at -45dB, and the strongest partial is -10dB, so it is only 35dB difference.
ReplyDeleteit's at -45dB at 22kHz, -65 at 20kHz, and gone at 18kHz (which is what I meant when I said 10k). Again I don't see your basis for argument...
ReplyDeleteI want to see some theory behind this synthesis. I suspect minblep or blit with very high oversampling. And I want to see how this behaves under audio rate fm. One clinical video shows nothing about an oscillator's true performance.