?? permutation.m
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function [P,S] = permutation(V,X,NFFT,FS,win,OVERLAP,MT,thres)NF = NFFT/2+1;D = ceil(MT*FS/(1000*(NFFT-OVERLAP)));MA = ones(D,1)/D;S = ones(1,NF); P = zeros(1,NF);TH = min(thres,1);B1 = specgram(X(:,1),NFFT,FS,win,OVERLAP);B2 = specgram(X(:,2),NFFT,FS,win,OVERLAP);L = size(B1,2);for f=1:NF, Z = inv(V(2*f-1:2*f,:))*[B1(f,:);B2(f,:)]; tmp1 = V(2*f-1:2*f,:)*[Z(1,:);zeros(1,L)]; tmp2 = V(2*f-1:2*f,:)*[zeros(1,L);Z(2,:)]; C11(f,:) = tmp1(1,:); C12(f,:) = tmp1(2,:); C21(f,:) = tmp2(1,:); C22(f,:) = tmp2(2,:); t1 = conv(MA,(ones(1,2)*abs(tmp1))); t2 = conv(MA,(ones(1,2)*abs(tmp2))); t1=t1/norm(t1); t2=t2/norm(t2); tmp(f)=t1*t2'; if tmp(f)>TH, S(f)=0; C11(f,:) = B1(f,:); C21(f,:) = zeros(1,L); C12(f,:) = B2(f,:); C22(f,:) = zeros(1,L); endend[tmp,l]=sort(tmp);f=l(1); k=f;y1 = zeros(1,L); y2 = y1;for f=l(2:NF), t1=conv(MA,(ones(1,2)*abs([C11(f,:);C12(f,:)]))); t2=conv(MA,(ones(1,2)*abs([C21(f,:);C22(f,:)]))); if norm(t1)~=0, t1=t1/norm(t1); end if norm(t2)~=0, t2=t2/norm(t2); end y1=ones(1,3)*[y1;abs(C11(k,:));abs(C12(k,:))]; y2=ones(1,3)*[y2;abs(C21(k,:));abs(C22(k,:))]; ny1 = conv(MA,y1);ny1 = ny1/norm(ny1); ny2 = conv(MA,y2);ny2 = ny2/norm(ny2); if (abs(t1*ny1')+abs(t2*ny2') < abs(t1*ny2')+abs(t2*ny1')), P(f)=1; end k=f;end?? 快捷鍵說明
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