语音合成与识别

开发平台：

Matlab

c5_threefilters.m：源码内容

							T=0.01;
f=0:0.1:50;
z=exp(-i*2*pi*f*T);
a0=0.239057;a1=0.239057;b1=0.521886;%bilinear z-transform
num=a0+a1*z;
den=1-b1*z;
ampx=abs(num./den);
a0=0.628319;b1=0.533488;%impulse invariant
num=a0;
den=1-b1*z;
ampy=abs(num./den);
a0=1.0;a1=0.533488;b1=0.533488;%step invariant
num=(a0-a1)*z;
den=1-b1*z;
ampz=abs(num./den);
plot(f,ampx,f,ampy,f,ampz)
xlabel('Frequency-Hz')
ylabel('Amplitude Response')
%End of script file

						