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ifft (MathScript RT Module Function)

LabVIEW 2012 MathScript RT Module Help

Edition Date: June 2012

Part Number: 373123C-01

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Owning Class: transforms

Requires: MathScript RT Module

Syntax

c = ifft(a)

c = ifft(a, b)

c = fft(a, b, d)

c = fft(a, [], d)

Description

Computes the inverse fast Fourier transform (IFFT). ifft computes the inverse discrete Fourier transform in the same manner as the Inverse FFT VI.

Examples

Inputs

Name Description
a Specifies a vector or matrix.
b Controls zero-padding to the signal. b is an integer and typically is a power of 2.
d Specifies the dimension of a in which LabVIEW performs the IFFT. d is an integer.
[] Tells LabVIEW that you want to specify a and d but not b.

Outputs

Name Description
c Returns the inverse fast Fourier transform of a. If a is a vector, c = ifft(a) returns the original inverse discrete Fourier transform (IDFT). If a is a matrix, c = ifft(a) returns the column-wise inverse fast Fourier transforms of all columns of a. c is a vector or matrix.

Details

The following table lists the support characteristics of this function.

Supported in the LabVIEW Run-Time Engine Yes
Supported on RT targets Yes
Suitable for bounded execution times on RT Not characterized

Examples

A = [1 2 3 4; 4 3 2 1]
C = ifft(A, 8)

Related Topics

fft
fft2d
ifft2d


 

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