Birdwatch Note Rating
2024-11-06 14:35:46 UTC - HELPFUL
Rated by Participant: 833164BFB652D52C842E55AE0AA83F70A936835991416051CB8D257A9F2AB6E7
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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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