code for triangular filter banks and MFCC

hi,

I having problem to create code for triangular filter banks and mfcc for the attached audio file. I would be much gratful if you could help me .im so deperate. Was working on it since a month but my code did not work.

Thank you

Kinds

Dan

Answer 1

[jibrahim]

There are two functions in Audio Toolbox that you can use for this task:

mfcc: Computes MFCC codefficients for you

designAuditoryFilterBank: Designs the triangular filter bank

[DOORYODHUN AHKU]

Thank you Ibrahim.

Kind Rgds

Dan

[DOORYODHUN AHKU]

Hi Ibrahim,

I will need a bit of help.

I did the following below and i got an error message saying 'designAuditoryFilterBank' requires Audio Toolbox.

Could you please advise

Thank you

Dan

fs = 48000;

fb = designAuditoryFilterBank(fs)

filterBank = designAuditoryFilterBank(fs)

numBands = size(fb,1) %#ok<NASGU>

numBands = 32

numPoints = size(fb,2) %#ok<NASGU>

numPoints = 513

[audioIn,fs] = audioread("mif_02484_00047480027.wav");

win = hamming(1024,"periodic");

noverlap = 512;

fftLength = 1024;

[S,F,t] = stft(audioIn,fs, ...

"Window",win, ...

"OverlapLength",noverlap, ...

"FFTLength",fftLength, ...

"FrequencyRange","onesided");

PowerSpectrum = S.*conj(S);

[fb,cf] = designAuditoryFilterBank(fs, ...

"FFTLength",fftLength, ...

"NumBands",numBands, ...

"FrequencyRange",range, ...

"Normalization",normalization);

plot(F,fb.')

grid on

title("Mel Filter Bank")

xlabel("Frequency (Hz)")

[jibrahim]

Dan,

the function is part of the Audio Toolbox product, so you need Audio Toolbox to be available.