<< FFTWwrapper

FFTW

ifftn >>

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ifft

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Inverse Fast Fourier transform.

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Syntax

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Y = ifft(X)

Y = ifft(X, n)

Y = ifft(X, n, dim)

Input argument

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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

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Y

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

Description

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

Example

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

See also

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fft, fftw.

History

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Version	Description
1.0.0	initial version

Author

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Allan CORNET