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annotate dsp/spec2fir.m @ 47:82075c94eed1

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adding a bunch of stuff, including graphics and pitch toolboxes.
author samer
date Sat, 17 Jan 2015 15:20:35 +0000
parents c3b0cd708782
children
rev   line source
samer@32 1 function R=spec2fir(A)
samer@32 2 % SPEC2FIR: convert magnitude spectra to FIR filter coefficients
samer@32 3 %
samer@32 4 % spec2fir :: [[M,L]] -> [[2*(M-1),L]].
samer@32 5
samer@32 6 n=size(A,1);
samer@32 7 S=[A; conj(A(n-1:-1:2,:))];
samer@32 8 R=fftshift(real(ifft(S)),1); % get filter coefficients
samer@32 9