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48, 44.1 khz, why no and/or not 40 khz, Only for 2 channel audio...........
kotrtim
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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Pio2001
post Dec 21 2002, 12:42
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In the digital domain, yes. (example, generating tones in a wav editor).
But the digital side effects (infinite ringing) can add distortion in the analog domain, to avoid this, the DACs and ADCs used have a frequency response slightly inferior.
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