annotate dsp/mfcc.m @ 47:82075c94eed1
adding a bunch of stuff, including graphics and pitch toolboxes.
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samer |
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Sat, 17 Jan 2015 15:20:35 +0000 |
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c3b0cd708782 |
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line source |
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samer@32
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1 % mfcc - Mel-frequency ceptral coefficients
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2 %
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3 % mfcc ::
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4 % [[M]->[40]] ~'which of 40 available coeffs to return',
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5 % N:natural ~'analysis window size',
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6 % [[T]] ~'input signal',
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7 % nonneg ~'sampling rate'
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8 % -> [[M,L]] ~'MFCCs for L time slices'.
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9 function y=mfcc(MX,N,x,fs)
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10 [pow,fx]=powspec(spdiag(hamming(N,'periodic'))*buffer(x,N,floor(N/2)),2^nextpow2(N+1));
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11 y=cepstrum(MX,melspace(400/3,min(7000,fs/2),42),fs*fx,pow);
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12 end
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