magresp(g,...); magresp(g,fs,...); magresp(g,fs,dynrange,....);
magresp(g) will display the magnitude response of the window on a log scale (dB);
magresp(g,fs) does the same for windows that are intended to be used with signals with sampling rate fs. The x-axis will display Hz.
magresp(g,fs,dynrange) will limit the dynamic range (see below).
magresp takes the following parameters at the end of the line of input arguments.
| 'dynrange',r | Limit the dynamic range of the plot to r dB. |
| 'fir' | Indicate that the input is an FIR window. magresp will zero-extend the window to display a smooth magnitude response. |
| 'L',L | Zero-extend the window to length L. |
| 'posfreq' | Show only positive frequencies. |
| 'nf' | Show also negative frequencies |
| 'autoposfreq' | Show positive frequencies for real-valued signals, otherwise show also the negative frequencies. This is the default. |
| 'opts',op | Pass options onto the plot command. The extra options op are specified as a cell array |
In addition to these flags, it is possible to speficy any of the normalization flags from setnorm to normalize the input before calculation of the magnitude response. Specifying '1' or 'area' will display a magnitude response which peaks at 0 dB.
The following will display the magnitude response of a Hann window of length 20 normalized to a peak of 0 dB:
magresp({'hann',20},'1');
The following will display the magnitude response of a Gaussian window of length 100:
magresp('gauss','L',100)
The following passes additional options to the plot command to draw in red:
magresp({'nuttall11',30},'opts',{'r'});