feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5pitchshiftsamplertimestretchyinfft+
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Last change
on this file since 10a6f7d was
913ee14,
checked in by Paul Brossier <piem@piem.org>, 12 years ago
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demo_filterbank*.py: improved
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-
Property mode set to
100755
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File size:
563 bytes
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| 1 | #! /usr/bin/python |
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| 2 | |
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| 3 | from aubio import filterbank |
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| 4 | from numpy import array, arange, vstack |
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| 5 | |
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| 6 | win_s = 8192 |
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| 7 | samplerate = 16000 |
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| 8 | |
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| 9 | f = filterbank(40, win_s) |
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| 10 | f.set_mel_coeffs_slaney(samplerate) |
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| 11 | |
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| 12 | from pylab import loglog, title, show, xlim, ylim, xlabel, ylabel |
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| 13 | xlim([0,samplerate / 2]) |
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| 14 | print f.get_coeffs().shape |
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| 15 | times = vstack([arange(win_s / 2 + 1) * samplerate / win_s] * 40) |
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| 16 | print times.shape |
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| 17 | loglog(times.T, f.get_coeffs().T, '.-') |
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| 18 | title('Mel frequency bands coefficients') |
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| 19 | xlim([100, 7500]) |
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| 20 | ylim([1.0e-3, 2.0e-2]) |
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| 21 | xlabel('frequency (Hz)') |
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| 22 | ylabel('amplitude') |
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| 23 | show() |
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