levinson (MathScript RT Module Function)
LabVIEW 2012 MathScript RT Module Help
Edition Date: June 2012
Part Number: 373123C-01
»View Product Info
Edition Date: June 2012
Part Number: 373123C-01
»View Product Info
 | Download Help (Windows Only) |
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)
Description
Uses Levinson-Durbin recursion to find the coefficients of a p-th all-pole IIR filter.
Inputs
| 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. |
Outputs
| Name | Description |
|---|---|
| a | Returns the backward filter coefficients. |
| err | Returns the prediction error. |
| k | Returns the reflection coefficients. |
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
r = [1, 3, 2, 4];
n = 3;
[a, err, k] = levinson(r, n)