sterrorpredict.asv

wav声音文件的通过多脉冲激励编码器

function STErrorFrame=STErrorPredict(lina,poles_num,win_length,fr,frmsize)

%caculate correlation predict error in a frame
STErrorFrame=zeros(1,frmsize);%store prediction error in correlation predict
sp=zeros(1,frmsize);%samples predicted
for i=1:frmsize
    if i<=win_length
        for j=1:poles_num
             if (i-j)>=1
                sp(i)=sp(i)+lina1(j)*fr(i-j);
             end
         end
     else
         for j=1:poles_num
             if (i-j)>=1
                sp(i)=sp(i)+lina2(j)*fr(i-j);
             end
         end
     end
     STErrorFrame(i)=fr(i)-sp(i);
 end