how to quantize the audio file?

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YULIM KANG
YULIM KANG 2020-10-30
编辑： Walter Roberson 2020-10-30
[y,fs]=audioread('handel.wav');
ft = y(:,1);
sigLength = length(ft); %length
t=(0:sigLength-1)/fs;
figure;
plot(t(1:200), ft(1:200)),grid;
xlabel('Time(s)');
ylabel('Amplitude');
then use a uniform quantizer to quantize the first 200 sampling points by 4 bits (L=16 levels).
Plot the Input wave and quantized output.

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回答（1 个）

Walter Roberson
Walter Roberson 2020-10-30
编辑：Walter Roberson 2020-10-30
https://www.mathworks.com/help/comm/ref/quantiz.html -- signal processing toolbox
https://www.mathworks.com/help/matlab/ref/double.discretize.html -- general numeric
If you use discretize then you get out bin numbers, which you can use to index the edge vector that you passed in, in order to get out the value of the "beginning" of the edge.
Another hint I would give is to use the 'native' option for audioread()

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