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48, 44.1 khz, why no and/or not 40 khz, Only for 2 channel audio...........
post Dec 18 2002, 04:11
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Look at this Poll

How high can you hear (with music & lowpass)

The poll starter didn't put frequency above 20 khz in the poll
So why don't just use a 40 khz PCM instead of 44.1 khz as human
can't listen to frequency above 20 khz?

16 x 44100 x2 = 1141.2 kbit/s

16 x 40000 x 2 = 1280 kbit/s

It does help to save some space!
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post Dec 18 2002, 09:15
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QUOTE (/\/ephaestous @ Dec 17 2002 - 11:24 PM)
From John Watkinson, The Art of Digital Audio, 2nd edition, pg. 104:


The 44.1 Khz sample rate is used in Mp3s and such because most of them are ripped from CDs and resampling is was not as good as it is today (Not too good still)..

Fascinating! Thanks for the quote.

I remember Frank Klemm mentioned all this a while back (here's the post, which contains some other neat tidbits), but at the time I couldn't quite understand what he meant (a common problem when I try to communicate with electrical engineers rolleyes.gif ).
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