On Sun, 30 Jan 2005 05:44:45 GMT, Doc wrote:
I've read where supposedly those who are accutely sensitive can hear
deficiencies in 44.1 /16-bit CD's. If so, how do those with "golden ears"
deal with eternally wallowing in inadequately reproduced sound?


Shannon's sampling theory hasn't changed since it was derrived during
WWII.

When I was working directly with telecoms and military types, the "rule
of thumb" we used was 2.5x the intended bandwidth, but that was generous
for unknown signals. The telecoms sampled at 8kHz and had been doing so
basically forever, at least in computer terms, but they'd been doing it
more or less forever and know a lot about reconstruction intelligible
voice.

By that criteria, 44.1 is a bit low for a 20kHz bandwidth, 96kHz a bit
generous. OTOH, a lot of beam forming types were delighted when,
because of the application to audio, inexpensive 100kHz multichannel ADC
and DAC chips became available.

The next time a relative gets an Ultrasound done, much of the resolution
you get nowadays is indirectly related to the pro audio market.