darrenyeats;675434 Wrote: > Terry, > I am not an engineer, so perhaps I am not the best to explain. > > An example of correlated noise is quantization noise. Taking as an > example your dreaded 1kHz tone, quantization noise would add side bands > to the 1kHz signal, yes. But it isn't these side bands that define > correlation. By correlated, one means the noise is a deterministic > function of the signal - or put another way, same signal in (even an > apparently random one), exactly the same noise produced every time. > > If we use this definition of correlated noise (and I do) then dithering > randomizes the noise - it makes the noise unpredictable for a given > input signal. > > That takes care of the technical side, now to practical matters. As you > asked, what impact would randomizing the noise have? > > Here, I point to the fact that we hear music as frequencies - not > amplitude values! To the degree a human is able to hear a signal as > frequencies then that signal does contain enough cyclical information > to benefit from dither. A signal beyond the help of randomized noise > would itself sound like noise to us, I think. > > Regards, Darren
I have not heard that we hear music as frequncies, not amplitude. It seems like both would be equally important. Terry -- TerryS ------------------------------------------------------------------------ TerryS's Profile: http://forums.slimdevices.com/member.php?userid=40835 View this thread: http://forums.slimdevices.com/showthread.php?t=89733 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/audiophiles
