levinson (MathScript RT Module Function)

LabVIEW 2012 MathScript RT Module Help

Edition Date: June 2012

Part Number: 373123C-01

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Owning Class: modeling and prediction

Requires: MathScript RT Module

Syntax

a = levinson(r)

a = levinson(r, n)

[a, err, k] = levinson(r)

[a, err, k] = levinson(r, n)

Uses Levinson-Durbin recursion to find the coefficients of a p-th all-pole IIR filter.

Name	Description
r	Specifies the deterministic autocorrelation sequence. If r is a matrix, LabVIEW determines the backward filter coefficients column by column.
n	Specifies the order of the backward filter coefficients. The default is length(r) - 1.

Name	Description
a	Returns the backward filter coefficients.
err	Returns the prediction error.
k	Returns the reflection coefficients.

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

r = [1, 3, 2, 4];
n = 3;
[a, err, k] = levinson(r, n)