Fourier transform

Fourier transform Word Origin noun Mathematics.

1. 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 of Fourier transform First recorded in 1920–25; see origin at Fourier analysis British Dictionary definitions for fourier transform Fourier transform noun

1. an integral transform, used in many branches of science, of the form F(x) = [1/√(2π)]ʃe i xy f(y)d y, where the limits of integration are from –∞ to +∞ and the function F is the transform of the function f