to change the amplitude of a .wav file
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Femi Okome
on 14 Dec 2022
Commented: Image Analyst
on 15 Dec 2022
I am new to Matlab and im trying to change the amplitude of a .wav file. i have exported the data and Fs. i just dont know how to now increase/decreas the aplitude of the wav.
the code below shows what i have done,
thanks for any advice given.
plot(data);
soundsc(data,fs);
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Accepted Answer
Image Analyst
on 14 Dec 2022
Try multiplying by a scaling factor:
amplificationFactor = 1.1; % Ten percent gain.
data = data * amplificationFactor;
plot(data);
sound(data, fs);
You might be interested in my File Exchange entry that allows you to plot the waveforms of all the files in a folder:
2 Comments
Image Analyst
on 15 Dec 2022
You probably need to square the signal to get power then use the formula here:
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