matlab x=wavread('F:\a.wav',1024);plot(x);y=wavread('F:\a.wa

matlab x=wavread('F:\a.wav',1024);plot(x);y=wavread('F:\a.wav',1000);a1=hamming(1000);a2=fft(y.*a1);a3=real(a2);plot(a3);z=wavread('F:\a.wav',[1,500]);han=hamming(100);En=conv(han,abs(z));plot(En);w=wavread('F:\a.wav',1024);h=hamming(1000);En=conv(h,w.*w);plot(En);k=wavread('F:\a.wav',[1000,2000]);han=hamming(1000);for i=1:1000if k(i)>=0b(i)=1;elseb(i)=-1;endendfor i=2:1000x(i)=b(i)-b(i-1);endz=conv(abs(x),han);Zn=z./2000;plot(Zn);x=wavread('F:\a.wav',1000);a1=xcorr(x);plot(a1);yc(1) = 0; step = 0.0001;x=wavread('F:\a.wav',1000);a1=xcorr(x);plot(a1);for n=1:1000d(n)= x(n)-yc(n);if d(n)>0 c(n)=0; elsec(n)=1;end if n>1if (c(n)==c(n-1)) step=2*step;elsestep=0.5*step;endendif d(n)>0 yc(n+1) = yc(n)+step;elseyc(n+1)=yc(n)-step;endendfor n = 1:1000if n>1if c(n)==c(n-1) step=2*step;elsestep=0.5*step;endendif n==1if ( c(n) == 0 )R(n) = step;elseR(n) =-step;endelseif ( c(n) == 0 )R(n) = R(n-1)+step;elseR(n) = R(n-1)-step;endendendplot(R);x=wavread('F:\a.wav',1024);step=0.0001; yc(1)=0; for n=1:1000d(n)= x(n)-yc(n);if d(n)>0d1(n)=step;c(n)=0;elsed1(n)=-step;c(n)=1;endyc(n+1)=yc(n)+d1(n);endfor n=1:1000if c(n)==0yc(n+1)=yc(n)+step;elseyc(n+1)=yc(n)-step;endendplot(yc);a=wavread('F:\a.wav');a1=fft(a);a2=abs(a1);a3=log(a2);a4=ifft(a3);a5=real(a4);plot(a5);a=wavread('F:\a.wav');a1=spectrum(a);plot(a1);x=wavread('F:\a.wav',1024); 后面的1024是什么意思?{ y=wavread('F:\a.wav',1000); a1=hamming(1000); a2=fft(y.*a1); a3=real(a2); plot(a3); }这个大括号里是在干什么?En=conv(han,abs(z)); a1=spectrum(a);