8 Jun
2010
8 Jun
'10
12:13 p.m.
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 !