music

From: der Mouse <mouse_at_Rodents.Montreal.QC.CA>
Date: Thu Aug 12 16:03:13 2004

> No it is sampling rate here that is the problem for 10,000 Hz. This
> signal gets chopped into a sine or square or triangle wave. Ok for
> telephone but not music.

That's a matter for reconstruction filters. Ideally, you take your
D->A output and run it through a filter that's flat from DC to the
limit frequency (half the sampling rate) and drops instantly to zero
gain for anything above that.

Of course, no such ideal filter exists, but it's possible to get close
enough for a lot of purposes. CD player makers put a lot of effort
into approximating such filters.

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Received on Thu Aug 12 2004 - 16:03:13 BST