Birdwatch Note Rating
2024-11-06 01:43:19 UTC - HELPFUL
Rated by Participant: 36AACCEB5B9E74154F26C0BC6F8360071D2AF8B51456F8268B39C0137816732D
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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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