clear all
close all
echo  on
a=-3:0.1:3;
mu=255;
[sqnr,a_quan,code]=mula_pcm(a,16,mu);%
pause
plot(a,a_quan,'-');%
title(' 非均勻量化級數為8的輸入輸出關系')

[sqnr,a_quan,code]=mula_pcm(a,64,mu);%
pause
plot(a,a_quan,'-');%
title(' 非均勻量化級數為16的輸入輸出關系')

[sqnr,a_quan,code]=mula_pcm(a,128,mu);%
pause
plot(a,a_quan,'-');%
title(' 非均勻量化級數為64的輸入輸出關系')