matlab dfilt,Delay filter

dfilt.delay

Delay filter

Syntax

Hd = dfilt.delay

Hd = dfilt.delay(latency)

Description

Hd = dfilt.delay returns a

discrete-time filter, Hd, of type delay, which

adds a single delay to any signal filtered with Hd. The filtered

signal has its values shifted by one sample.

Hd = dfilt.delay(latency) returns

a discrete-time filter, Hd, of type delay,

which adds the number of delay units specified in latency to any

signal filtered with Hd. The filtered signal has its values

shifted by the latency number of samples. The values that appear

before the shifted signal are the filter states.

Examples

Create a delay filter with a latency of 4 and

filter a simple signal to view the impact of applying a delay.

h = dfilt.delay(4)

h =

FilterStructure: 'Delay'

Latency: 4

PersistentMemory: false

sig = 1:7 % Create some simple signal data

sig =

1 2 3 4 5 6 7

states = h.states % Filter states before filtering

states =

0

0

0

0

filter(h,sig) % Filter using the delay filter

ans =

0 0 0 0 1 2 3

states=h.states % Filter states after filtering

states =

4

5

6

7

Introduced before R2006a