Fourier transform

Fourier transform

noun Mathematics.
a mapping of a function, as a signal, that is defined in one domain, as space or time, into another domain, as wavelength or frequency, where the function is represented in terms of sines and cosines.

Origin:
1920–25; see Fourier analysis

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To Fourier transform
Collins
World English Dictionary
Fourier transform
 
n
an integral transform, used in many branches of science, of the form F(x) = [1/√(2π)]ʃeixyf(y)dy, where the limits of integration are from --∞ to +∞ and the function F is the transform of the function f

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
FOLDOC
Computing Dictionary

Fourier transform definition

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)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature