On Tue, Jun 08, 2010 at 08:53:43AM +0200, Philipp Überbacher wrote:
> So the actual problem isn't the noise but its correlation with the signal?
Yes.
> I'm a bit curious about the first graph. The actual signal is the ~1kHz
> one, but what are all the other 'spikes'?
The quantisation error appearing as distortion. This the problem
that is solved by using dithering.
1 kHz at FS = 48 kHz means a period of exactly 48 samples, the
same values are repeated for each period. So the quantisation
error is periodic as well, with a period of 1 kHz. In other
words, distortion. Adding noise randomizes the quantisation
error.
Ciao,
-- FA O tu, che porte, correndo si ? E guerra e morte ! _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@email-addr-hidden http://lists.linuxaudio.org/listinfo/linux-audio-devReceived on Tue Jun 8 16:15:03 2010
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