annotate dsp/hz2mel.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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samer@32
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1 % hz2mel - Convert frequencies from Hertz to mel scale.
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2 %
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3 % hz2mel ::
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4 % [[D]->nonneg] ~'any shape array of frequencies in Hz'
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5 % -> [[D]->nonneg] ~'corresponding array of frequencies in mels'.
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6 %
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7 % Mel scale is approx linear below 700 Hz, and approx log above.
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8 % Overall scaling fixed so that 1000 mel = 1000 Hz.
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9 function m=hz2mel(f), m=2595*log10(1+f/700);
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