Birdwatch Note Rating
2024-11-05 23:15:17 UTC - HELPFUL
Rated by Participant: 95DEF66AC670450BDDA2A5E51BEB01CD0EAFA2BF2C878335EDC2827A3E3DF0A9
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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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