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Some of the more well-known examples are: Low-bitrate audio compression (MP3) use Fourier transforms. Image and video compression use Fourier transforms. Les
by gwbas1c 3y ago
Some of the more well-known examples are:
Low-bitrate audio compression (MP3) use Fourier transforms.
Image and video compression use Fourier transforms.
Less-well-known:
AC electricity has to run at (almost) exactly 60hz / 50hz. The power plants use Fourier transforms to measure the exact frequency. (And then use the measurement to adjust accordingly.)
Some telecommunications techniques may use Fourier transforms: IE, the dial-up modems used in the 1990s used Fourier transforms to interpret the analog signal and determine what the bits were.
This article explains using a Fourier transform to remove the "dots" from an image that was printed in a book: https://matzjb.se/2015/08/08/smoothing-a-halftone-photo-using-fft/ https://matzjb.se/2015/08/08/smoothing-a-halftone-photo-usin...