How to normalize a discrete signal?
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Hello!!
I want to calculate the signal energy in rolling windows, after first normalizing to interval [-1,1].
Firstly, I wrote the below code to read and sound the signal.
[y,Fs] = audioread('viola_series.wav');
plot(y);
title('Audio viola series.wav');
sound(y,Fs);
How to do the normalization?
Thanks in advance
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Accepted Answer
Adam Danz
on 23 Jan 2021
Audio data are typically already normalized between [-1,1]. Are you getting values outside of that range?
min(y)
max(y)
Anyway, this is how to normalize any vector to [-1,1];
ynorm = (y-min(y))/range(y)*2-1;
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