Pierre Massat escribió:
Wait, so aliasing occurs when the signal is sampled?
So if i have this patch :
[adc~]
|
|
|
[dac~]
and if the signal already contains frequencies above the Nyquist, i will
get aliasing?
Well obviously (or not) a real-world ADC (e.g. a sound card) always
includes an analog lowpass filter that cuts off the frequencies above
Nyquit before actually digitalizing!!!!
However, when you sample a mathematically generated signal, such as:
[phasor~ 1000]
|
[dac~]
then no filtering occurs, and aliasing does occur.
More evident:
[osc~ 40000]
|
[dac~]
--
Matteo Sisti Sette
matteosistise...@gmail.com
http://www.matteosistisette.com
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