Quote:
Originally Posted by Quoth
44.1 k sample rate, so can have (in theory) up to 22 kHz.
AM Radio in Europe is about 4.5 kHz.
Phones (analogue & many digital codecs) about 3 to 3.5 kHz
FM Radio about 15 kHz.
Cassettes from about 7 kHz (1963) to 16 kHz (a tiny few do more).
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Tangentially, this how audio sampling actually works and why 44.1KHz sampling can perfectly reproduce the original audio signal, with practical demonstrations:
https://www.youtube.com/watch?v=cIQ9IXSUzuM