Mercurial > hg > ishara
annotate dsp/mfcc.m @ 32:c3b0cd708782
Imported core dsp tools.
| author | samer |
|---|---|
| date | Sun, 20 Jan 2013 13:48:47 +0000 |
| parents | |
| children |
| rev | line source |
|---|---|
| samer@32 | 1 % mfcc - Mel-frequency ceptral coefficients |
| samer@32 | 2 % |
| samer@32 | 3 % mfcc :: |
| samer@32 | 4 % [[M]->[40]] ~'which of 40 available coeffs to return', |
| samer@32 | 5 % N:natural ~'analysis window size', |
| samer@32 | 6 % [[T]] ~'input signal', |
| samer@32 | 7 % nonneg ~'sampling rate' |
| samer@32 | 8 % -> [[M,L]] ~'MFCCs for L time slices'. |
| samer@32 | 9 function y=mfcc(MX,N,x,fs) |
| samer@32 | 10 [pow,fx]=powspec(spdiag(hamming(N,'periodic'))*buffer(x,N,floor(N/2)),2^nextpow2(N+1)); |
| samer@32 | 11 y=cepstrum(MX,melspace(400/3,min(7000,fs/2),42),fs*fx,pow); |
| samer@32 | 12 end |