Sound quantization on matlab

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Hello,

We need for a project at school , to use matlab to quantize a sound (.wav) , we searched on internet but found nothing about that , if someone know how to do that , it would be great

Thanks in advance

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NITIN 2022-8-30

在 MATLAB Online 中打开

load voice.mat
subplot(3,1,1);
[x,fs]=audioread('voice.wav');
info = audioinfo( 'voice.wav');
N=length(x);
T=2.9520;
t=linspace(0,T,N);
plot(t,x);
xlabel('time')
ylabel('x(t)')
y=abs(fftshift(fft(x)));
F=linspace(-fs/2,fs/2,N);
subplot(3,1,2);
plot(F,y);
xlabel('frequency')
ylabel('x(f)')
Xmax=max(x);
Xmin=min(x);
xd = Xmax - Xmin ;
L=4;
Delta =(xd/L);
q=(Xmin-Delta/2):Delta:(Xmax+Delta/2);
q=q(2:end-1);
DTV=zeros(1,L-1);
for i=1:(L-1)
    DTV(i)=(q(i+1)+q(i))/2;
end
[i,Xq]=quantiz(x,DTV,q);
subplot(3,1,3);
plot(t,Xq);