annotate arrows/dsp/ainvmel.m @ 6:0ce3c2070089
Removed duplicate code and fixed doc in timed_action.
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samer |
| date |
Mon, 14 Jan 2013 14:33:37 +0000 |
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672052bd81f8 |
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| rev |
line source |
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samer@0
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1 % ainvmel - arrow to warp mel scale spectrum to linear freq spectrum
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2 %
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3 % ainvmel ::
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4 % N:natural ~'block size of original audio frames',
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5 % nonneg ~'audio sampling frequency in Hz',
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6 % [[1,2]] ~'frequency limits in Hz',
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7 % L:natural ~'number of bands in mel spectrum'
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8 % -> arrow( {[[L]]}, {[[dftbins(N)]]}, empty).
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9
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10 function o=ainvmel(N,fs,flim,L)
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11 o=amult(tri_filterbank_aa(melspace(flim(1),min(flim(2),fs/2),L+2),binmap(0,fs/2,dftbins(N)))');
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samer@0
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12 end
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