## Fourier transform

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)

### Nearby terms:

four colour theorem ♦ **Fourier transform** ♦ fourth generation computer

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