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); Fs = 1000; t = 0:1/Fs:1; sig = cos(2*pi*100*t); y = filter(h,sig); subplot(211); stem(sig,'markerfacecolor',[0 0 1]); axis([0 20 -2 2]); title('Input Signal'); subplot(212); stem(y,'markerfacecolor',[0 0 1]); axis([0 20 -2 2]); title('Delayed Signal');
See Also
Introduced in R2011a