I'm trying to find abrupt changes in the spectrogram of an audio using the findchangepts function. However, every time I get the error: Expected input number to be finite.

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[y, Fs] = audioread('vocals.wav');
[s,f,t,pxx] = spectrogram(y,128,120,128,Fs, 'yaxis');

Answers (1)

Walter Roberson
Walter Roberson on 8 Dec 2022
Suppose that somehow one of the output powers in pxx were exactly 0. Then pow2db() would be -inf there, but findchangeptrs() cannot accept infinite inputs.

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