On Wed, 3 Nov 2004 18:47:55 +0000, Glenn Booth
wrote:

Hi,

In message , Tim S Kemp
writes
Stewart Pinkerton wrote:

Whaaaat? That's rubbish, any modern 44.1k ADC is ruler flat to at
least 20kHz.

Never measured it, but the waveforms of perfectly audible stuff8khz will be
somewhat distorted at 44k sampling compared to higher rates.

Depends on the waveform. It's not true for sine waves. It would be true
for waveforms that include higher harmonics that are out of band (like a
square wave), but that's another story - those components wouldn't be
within the nyquist limit.

Just to be a bit pedantic, whatever the shape of the waveform,
everything below 20kHz is still reproduced perfectly.

d

Pearce Consulting
http://www.pearce.uk.com