?? sepfilter.m
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function [BT1,BT2]=sepfilter(S,P,V,NFFT)NF = NFFT/2+1;for f=1:NF, f1=2*f-1; f2=2*f; if S(f)==1, TMPV=inv(V(f1:f2,:)); if P(f)==1, TMPV=flipud(TMPV); end TMPINV=inv(TMPV); BF1=TMPINV(:,1)*TMPV(1,:); BF2=TMPINV(:,2)*TMPV(2,:); else if P(f)==0, BF1=eye(2); BF2=zeros(2); else BF1=zeros(2); BF2=eye(2); end end BF1_11(f)=BF1(1,1); BF1_12(f)=BF1(1,2); BF1_21(f)=BF1(2,1); BF1_22(f)=BF1(2,2); BF2_11(f)=BF2(1,1); BF2_12(f)=BF2(1,2); BF2_21(f)=BF2(2,1); BF2_22(f)=BF2(2,2);endBF1_11(NF+1:NFFT)=conj(fliplr(BF1_11(2:NF-1)));BF1_12(NF+1:NFFT)=conj(fliplr(BF1_12(2:NF-1)));BF1_21(NF+1:NFFT)=conj(fliplr(BF1_21(2:NF-1)));BF1_22(NF+1:NFFT)=conj(fliplr(BF1_22(2:NF-1))); BF2_11(NF+1:NFFT)=conj(fliplr(BF2_11(2:NF-1)));BF2_12(NF+1:NFFT)=conj(fliplr(BF2_12(2:NF-1)));BF2_21(NF+1:NFFT)=conj(fliplr(BF2_21(2:NF-1)));BF2_22(NF+1:NFFT)=conj(fliplr(BF2_22(2:NF-1))); BT1(1,:)=ifft(BF1_11); BT1(2,:)=ifft(BF1_12);BT1(3,:)=ifft(BF1_21); BT1(4,:)=ifft(BF1_22);BT2(1,:)=ifft(BF2_11); BT2(2,:)=ifft(BF2_12);BT2(3,:)=ifft(BF2_21); BT2(4,:)=ifft(BF2_22); BT1=real(BT1); BT2=real(BT2);?? 快捷鍵說明
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