c3.m

MATLAB语音信号处理功能

%program c3
m=1:255;
k=-500:500;
w=(pi/500)*k;
R=k/500;
r0=0.9141;
r2=r(257:511);
X=r2*cos(pi/500*m'*k)+r0;
magX=abs(X);
subplot(211);
plot(R,magX);
xlabel('Angular frequency,w(pi)');
ylabel('Pbt(w)');
title('Black_Turkey');
%AR
HH=zeros(1,1001);
w=(pi/1000)*k;
a1=-0.195;
a2=0.95;
var=1;

H=1+a1*exp(-j*pi/500*k)+a2*exp(-j*2*pi/500*k);
magH=abs(H);

i=1;
while i<1001
    HH(i)=1/magH(i).^2;
    magH(i)=magH(i+1);
    i=i+1;
end
HH(1)=1/magH(1).^2;
HH(1001)=1/magH(1001).^2;
subplot(212);
plot(R,var*HH);
xlabel('Angular frequency,w(pi)');
ylabel('Par(w)');
title('AR GONGLVPU');