ifft

Inverse Fast Fourier transform.

Syntax

  • Y = ifft(X)

  • Y = ifft(X, n)

  • Y = ifft(X, n, dim)

Input argument

  • X - a vector, matrix or N-D array (double, single, integer, logical).

  • n - transform length: a non negative integer scalar or [] (default).

  • dim - dimension: a positive integer scalar.

Output argument

  • Y - a vector, matrix, N-D array: frequency domain representation.

Description

ifft(X) computes the inverse discrete Fourier transform of X using a Fast Fourier Transform (FFT) algorithm based on FFTW library.

Example

A = [1:10]
Y = fft(A)
R = ifft(Y)

See also

fft, fftw.

History

VersionDescription

1.0.0

initial version

Author

Allan CORNET

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