Hi,
Here is a patch to fix the Blackman-Harris window generator.
It turns out that the version in current svn generates asymmetrical
windows for an even number of points.
This patch fixes that.
I intend to take a look at the other windows but that might be a few
days out.
Mike
Index: main/signal/inst/blackmanharris.m
===================================================================
--- main/signal/inst/blackmanharris.m (revision 5506)
+++ main/signal/inst/blackmanharris.m (working copy)
@@ -30,7 +30,7 @@
a1 = 0.48829;
a2 = 0.14128;
a3 = 0.01168;
- n = -ceil(N/2):N/2;
- w = a0 + a1.*cos(2.*pi.*n./N) + a2.*cos(4.*pi.*n./N) +
a3.*cos(6.*pi.*n./N);
+ n = 0:N;
+ w = a0 - a1.*cos(2.*pi.*n./N) + a2.*cos(4.*pi.*n./N) -
a3.*cos(6.*pi.*n./N);
endfunction;
\ No newline at end of file
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