Roy W. Rising wrote:
"Rudi Gerberich" wrote:
http://www.saecollege.de/reference_m.../Recorders.htm
read "Sampling Rate" - enjoy;-)
Intellectually, I know that using a 44.1 KHz sampling rate there should be
some kind of anomally when a sine wave of 11.025 KHz (44.1 / 4) is
recorded. After all, there are so few samples per cycle from which to
reconstruct the waveform! But ... I've done the test ... A/D~D/A @ 44.1
KHz. As my sine wave generator sweeps upward from 10 KHz, the
ocilloscope's waveform display stays smoothly sinusoidal. At 11.025 KHz,
nothing changes! As Carson would say "How dey do dat?" Somewhere in the
darkness Ron Extes whispers "algorithms!"
There is no pole, Neo.
May the spirit of Nyquist shine upon you.
--
Les Cargill