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dfilt.latticeallpass

Discrete-time, lattice allpass filter

Syntax

Hd = dfilt.latticeallpass(k)
Hd = dfilt.latticeallpass

Description

Hd = dfilt.latticeallpass(k) returns a discrete-time, lattice allpass filter, Hd, with lattice coefficients, k.

Hd = dfilt.latticeallpass returns a default, discrete-time, lattice allpass filter, Hd, with k=[ ]. This filter passes the input through to the output unchanged.

The resulting filter states column vector Hd.States is

$\left(\begin{array}{c}z\left(1\right)\\ z\left(2\right)\end{array}\right)$

Examples

Form a third-order lattice allpass filter structure for a dfilt object, Hd, using the following lattice coefficients:

```k = [.66 .7 .44];
Hd = dfilt.latticeallpass(k)
```