speechcoder2.txt

简单lpc音码器与声激励lpc音码器比较

function[outspeech]=speechcoder2(inspeech)
if(nargin~=1)
error('argument check failed');
end;
Fs=16000;
Order=10;
[aCoeff,resid,pitch,G,parcor,stream]=proclpc(inspeech,Fs,Order);
resid=dct(resid);
[a,b]=size(resid);
resid=[resid(1:50,:);zeros(430,b)];
resid=uencode(resid,4);
resid=uencode(resid,4);
resid=idct(resid);
noise=[zeros(50,b);0.01*randn(430,b)];
resid=resid+noise;
outspeech=synlpc2(aCoeff,resid,Fs,G);