- Apr 3, 2016
I think, that's not what it says on the Nyquist-Shannon-tin. iirc, when you patch a frequency generator into an fft module, visualize that shit, and then turn the frequency knob continuously up, you see the peek in the spectrum wander to the right upt to the Nyquist freq and then wander left. I.e. higher freqs don't get drowned, but aliased. So that in case of downsampling one would first have to low pass filter.(nyquist would render anything above 11.025kHz being little more than noise).
But, could someone please correct or confirm what I just said?