MFCC coefficients of a speech sample

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Abraham Thomas
Abraham Thomas 2021년 3월 25일
댓글: Abraham Thomas 2021년 3월 29일
There are 13 MFCC coeffecients in MFCC in MATLAB.
What are the 13 values? I mean each of the 13.
Thank you

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Gaurav Garg
Gaurav Garg 2021년 3월 29일
Hi Abraham,
In order to separate out the individual frequencies present in an audio signal, MFCCs are computed over the signals in the audio. A single vector of MFCC is produced as the result of Short-Time Fourier Transfrom (STFT). MFCCs are computed over a frame of 25ms, with a stride of 10 ms between each frame. Therefore, you will get 100 vectors per second of speech, which gives you a matrix of shape (100, 13) for the resultant MFCC.
To sum it up, the 13 MFCCs are the 13 mel-frequency cepstral coefficients for the corresponding frame of the speech file. For any more help on functions on MFCC, you can refer to the link here.
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Abraham Thomas
Abraham Thomas 2021년 3월 29일
Thnq very much Gaurav sir. I was looking for some more features which I may require to analyse the speech sample. In particular, Stuttered Speech sample.

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