Kaiser window filter from specification object
h = design(d,'kaiserwin')
h = design(d,'kaiserwin',designoption,value,designoption,...
h = design(d,'kaiserwin') designs a digital filter hd, or a multirate filter hm that uses a Kaiser window. For kaiserwin to work properly, the filter order in the specifications object must be even. In addition, higher order filters (filter order greater than 120) tend to be more accurate for smaller transition widths. kaiserwin returns a warning when your filter order may be too low to design your filter accurately.
To determine the available design options, use designmethods with the specification object and the design method as input arguments as shown.
For complete help about using kaiserwin, refer to the command line help system. For example, to get specific information about using kaiserwin with d, the specification object, enter the following at the MATLAB prompt.
This example designs a direct form FIR filter from a lowpass filter specification object.
d=fdesign.lowpass; Hd=design(d,'kaiserwin'); fvtool(Hd)