Sir, I tried to calculate the pitch of an audio but it showing the error.

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Suchithra K S
Suchithra K S 2018-11-29
评论： Walter Roberson 2018-11-29
[audioIn,fs] = audioread('cryrumble.wav');
[f0,idx] = pitch(audioIn,fs);
Plot the audio signal and pitch contour.
subplot(2,1,1)
plot(audioIn)
ylabel('Amplitude')
subplot(2,1,2)
plot(idx,f0)
ylabel('Pitch (Hz)')
xlabel('Sample Number')
The error is like this"featurepitchc
Undefined function or variable 'pitch'.
Error in featurepitchc (line 3)
[f0,idx] = pitch(audioIn,fs);"
how to rectify the error

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回答（1 个）

Walter Roberson
Walter Roberson 2018-11-29
pitch() is from the Audio System Toolbox, R2018a and later.
The Audio System Toolbox itself was new in R2017b.

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