filter_fft (MathScript RT Module Function)

LabVIEW 2012 MathScript RT模块帮助

版本日期:June 2012

产品编号:373123C-0118

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Owning Class: filter implementation

Requires: MathScript RT Module

Syntax

y = filter_fft(f, x)

y = filter_fft(f, x, n)

Legacy Name: fftfilt

Description

Uses FFT-filter coefficients to filter a signal. filter_fft works column-wise for matrices. If x and f are matrices of the same size, this function works column-wise for both x and f.

Examples

Inputs

Name Description
f Specifies the FFT-filter coefficients. f is a vector or matrix.
x Specifies the signal you want to filter. x is a real or complex vector or matrix.
n Specifies the minimum number of points in the FFT. n is a positive integer.

Outputs

Name Description
y Returns the filtered signal. y is a real or complex 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

F = [1, 2, 1, 7];
X = 0:0.1:1;
Y = filter_fft(F, X)

Related Topics

fft2d
fft
filter

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