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Matlab for the DPSS Window
The function dpss in the Matlab Signal Processing Tool
Box4.10 can be used to compute them as follows:
w = dpss(M,alpha,1); % discrete prolate spheroidal sequence
where
is the desired window length, and
can be
interpreted as half of the window's time-bandwidth product
in ``cycles''. Alternatively,
can be
interpreted as the highest bin number
inside the main lobe of the
window transform
, when the DFT length is equal
to the window length
. (See the next section on the Kaiser window
for more on this point.)
Some examples of DPSS windows and window transforms are given in
Fig.3.29.
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