www.gusucode.com > 压缩感知重构算法 压缩感知源码程序 > MirrorFilt.m
function y = MirrorFilt(x) % MirrorFilt -- Apply (-1)^t modulation % Usage % h = MirrorFilt(l) % Inputs % l 1-d signal % Outputs % h 1-d signal with DC frequency content shifted % to Nyquist frequency % % Description % h(t) = (-1)^(t-1) * x(t), 1 <= t <= length(x) % % See Also % DyadDownHi % y = -( (-1).^(1:length(x)) ).*x; % % Copyright (c) 2006. David Donoho % % % Part of SparseLab Version:100 % Created Tuesday March 28, 2006 % This is Copyrighted Material % For Copying permissions see COPYING.m % Comments? e-mail sparselab@stanford.edu %