1 Oct
2014
1 Oct
'14
noon
On 10/1/14, Tim Goetze <tim(a)quitte.de> wrote:
The lowpass/antialiasing filters used for most audio
productions
usually operate very close to the Nyquist limit. Those employed in
lossy audio data compression often (but not always) are set to a lower
cutoff frequency. On a spectrogram, their effect is visible as a
total absence of energy above, say, 20kHz or lower.
Thanks, Tim, I'll do some investigation.