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diff dsp/oggwin.m @ 32:c3b0cd708782

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Imported core dsp tools.
author samer
date Sun, 20 Jan 2013 13:48:47 +0000
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dsp/oggwin.m	Sun Jan 20 13:48:47 2013 +0000
@@ -0,0 +1,20 @@
+
+% OGGWIN Ogg-vorbis window.
+%   y = oggwin(N)
+%
+%   Used in MDCT transform for TDAC
+%   The window used in Ogg-Vorbis open source codec
+%
+%   N: length of window to create
+%   y: the window in column
+
+% ------- oggwin.m -----------------------------------------
+% Marios Athineos, marios@ee.columbia.edu
+% http://www.ee.columbia.edu/~marios/
+% Copyright (c) 2004 by Columbia University.
+% All rights reserved.
+% ----------------------------------------------------------
+
+function y = oggwin(N)
+x = (0:(N-1)).';
+y = sin(0.5*pi*sin(pi*(x+0.5)/N).^2);