Mercurial > hg > ishara

view arrows/dsp/adct.m @ 42:ae596261e75f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Various fixes and development to audio handling
author samer
date Tue, 02 Dec 2014 14:51:13 +0000
parents 672052bd81f8
children
line wrap: on
line source
% adct - arrow for DCT
%
% adct :: M:natural -> arrow({[[N]]}, {[[M]]}, empty).
%
% Produces only the first M DCT coefficients
function o=adct(M)
	I=1:M;
	o=arrf(@mkdct,1,1);

	function f=mkdct(sizes_in)
		% take DCT size from size(1) of first input
		%W=row(dct(eye(sizes_in{1}(1))),M);
		f=@(x)row(dct(x),I);
	end
end