window (filter design method)
FIR filter using windowed impulse response
Syntax
h = window(d,'window',fcnhndl)
h = window(d,win)
Description
Note
This is a description of the overloaded method used in conjunction with fdesign
(DSP System Toolbox) to design a filter from a
filter specification object. To access the window function gateway see
window
.
h = window(d,'window',fcnhndl)
designs
an FIR filter using the specifications in filter specification object d
.
fcnhndl
is a handle to a filter design function that returns a window
vector, such as the hamming
or blackman
functions.
fcnarg
is an optional argument that returns a window. You pass
the function to window
. Refer to example 1 in the following section
to see the function argument used to design the filter.
h = window(d,win)
designs
a filter using the vector you supply in win
. The
length of vector win
must be the same as the impulse
response of the filter, which is equal to the filter order plus one.
Examples
Version History
Introduced in R2009a