<*mathematics*> A technique for expressing a waveform as a
weighted sum of sines and cosines.

Computers generally rely on the version known as discrete Fourier transform.

Named after J. B. Joseph Fourier (1768 -- 1830).

See also wavelet, discrete cosine transform.

(1997-03-9)

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**Nearby terms:**
four-colour glossies « four colour map theorem « four colour theorem « **Fourier transform** » fourth generation computer » fourth generation language » fourth normal form

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Copyright Denis Howe 1985