samer@32: 
samer@32: % OGGWIN Ogg-vorbis window.
samer@32: %   y = oggwin(N)
samer@32: %
samer@32: %   Used in MDCT transform for TDAC
samer@32: %   The window used in Ogg-Vorbis open source codec
samer@32: %
samer@32: %   N: length of window to create
samer@32: %   y: the window in column
samer@32: 
samer@32: % ------- oggwin.m -----------------------------------------
samer@32: % Marios Athineos, marios@ee.columbia.edu
samer@32: % http://www.ee.columbia.edu/~marios/
samer@32: % Copyright (c) 2004 by Columbia University.
samer@32: % All rights reserved.
samer@32: % ----------------------------------------------------------
samer@32: 
samer@32: function y = oggwin(N)
samer@32: x = (0:(N-1)).';
samer@32: y = sin(0.5*pi*sin(pi*(x+0.5)/N).^2);