Birdwatch Note Rating
2024-11-06 13:23:26 UTC - NOT_HELPFUL
Rated by Participant: 73CB5F036750933DB84D57C4801096AB64C9244CB9E4B78CBCA5808FEABAD9E0
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Original Note:
Digital sound waves are not stair steps. Digital-to-analog conversion *perfectly* reconstructs the original analog signal as a smooth wave, including all frequency components up to 1/2 of the sampling frequency. This follows from the Nyquist-Shannon sampling theorem. https://www.youtube.com/watch?v=cIQ9IXSUzuM https://en.wikipedia.org/wiki/Nyquist–Shannon_sampling_theorem
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