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annotate extra/lab2_4.m @ 13:844d341cf643 tip

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Back up before ISMIR
author Yading Song <yading.song@eecs.qmul.ac.uk>
date Thu, 31 Oct 2013 13:17:06 +0000
parents 6840f77b83aa
children
rev   line source
yading@10 1 N=1024;
yading@10 2 t = [0:1/44100:0.1-1/44100];
yading@10 3 x1=cos(2*pi*100*44100/1024*t);
yading@10 4 x801 = x1(1:801);
yading@10 5 xlength=length(x801);
yading@10 6 fftbuffer=zeros(N, 1);
yading@10 7 fftbuffer(1:(xlength+1)/2) = x801((xlength+1)/2:xlength);
yading@10 8 fftbuffer(N-(xlength-1)/2+1:N) = x801(1: (xlength-1)/2);
yading@10 9 plot(unwrap(angle(fftbuffer,1024)));