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Old May 22nd 04, 03:59 AM posted to rec.audio.tech,rec.audio.misc,rec.audio.pro,uk.rec.audio
Logan Shaw
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Posts: 2
Default Digital audio stream terms?

DaveC wrote:

On Fri, 21 May 2004 18:52:15 -0700, Les Cargill wrote
(in article ):


An audio CD is digitized at 44.1 KHz, but there's no Kbps rating
associated
with the digitizing, that I'm aware of.



Sure there is. It's 1.44 M(bit)ps or something. It shows
up in Winamp when you play back 44.1 .wav files.



So it's 44.1 x 8 (or whatever a byte is) x 2 (stereo) + overhead +
errorchecking = encoding kbps?


44.1 kilo-samples per second x 1000 kHz/Hz * 8 bits/byte * 2 bytes/sample
* 2 channels + overhead = encoding bits/second.

So for CD-quality, it's 1,411,200 bits/second + overhead, which
could be in the neighborhood of 1.44 megabits/second if you
only have a few percent of overhead (which is feasible in
some cases).

- Logan