TerryS;675015 Wrote: 
> 
> If you have a signal that is constantly changing, dithering has no
> effect whatsoever.
> 

TerryS;675613 Wrote: 
> Think for a minute about what the time domain signal is representing at
> any given instant.  There will be some low frequency fundamental, that
> may indeed almost look sinusoidal.  But on top of that, are any number
> of higher frequency signals.  Some related to the fundamental, some
> from other instruments that are totally unrelated.  Hell, there may be
> a hundred instruments, all with their fundamentals along with all their
> harmonics.  Literally thousands of signals all added together with
> changing phase and changing amplitude.  And all of them get added
> together to create that time domain signal.  It is very random.

Well, it APPEARS very random I grant you - in the time domain. But of
course, as we all know, music is very structured - and you can see and
hear this in the frequency domain.

My - our - point is that dither's success is not dependent on structure
being readily apparent to the naked eye, in the time domain!

You seem to be visualising an averaging effect in the time domain for a
sine wave (presumably because its cyclical structure is readily apparent
in that domain) but of course the average of all those values would be
zero. So, you are already subconsciously accepting that "only by
thinking about frequencies can this dither thing be explained".

All you need is to take this insight and push it a bit further; I don't
think there's a person on earth that can understand this dither thing
without referring to the frequency domain - just as several posters
here have done.
Darren


-- 
darrenyeats

http://www.amazon.co.uk/gp/richpub/listmania/byauthor/A3H57URKQB8AQO/ref=cm_pdp_content_listmania/203-7606506-5721503.

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