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Member of the filter implementation class.

Syntax

y = filtfilt(b, a, x)

Description

Applies a one-dimensional zero-phase filter. filtfilt applies the filter, reverses the order of the resulting signal, applies the filter again, and reverses the signal a second time, resulting in zero-phase behavior. filtfilt works column-wise for matrices.

Examples

Inputs

Name	Description
b	Specifies the forward filter coefficients. b is a vector.
a	Specifies the backward filter coefficients. If the first backward filter coefficient does not equal 1, LabVIEW normalizes the elements in a by the first backward filter coefficient. a is a vector.
x	Specifies the signal to filter. x is a real or complex vector or matrix.

Outputs

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

Examples

X = 0:0.01:1;
B = [1];
A = [1, 1, 1];
Y = filtfilt(B, A, X)

Related Topics

filter