[PD] audio signal distinguishing

Billy Stiltner billy.stiltner at gmail.com
Thu May 23 19:01:09 CEST 2019

from chapter 3 of theory and techniques of electronic music
"Figure 3.1: Two real sinusoids, with angular frequencies π/2 and 3π/2,
that they coincide at integers. A digital audio signal can’t distinguish
the two."

How does an audio signal distinguish 2 waveforms?
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