Anything related to Fourier series, Fourier transform and similar mathematical tools used to analyze the frequency content of a signal.

Anything related to Fourier series, Fourier transform and similar mathematical tools used to analyze the frequency content of a signal.

Fourier series and transform are named after French mathematician Jean Baptiste J. Fourier (1768-1830), who gave great contributions to trigonometric series theory while he was studying heat transfer in solid bodies.

See also Wikipedia on Fourier series and Fourier transform.

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