source: python/demos/demo_filterbank_slaney.py @ 78561f7

feature/autosinkfeature/cnnfeature/cnn_orgfeature/constantqfeature/crepefeature/crepe_orgfeature/pitchshiftfeature/pydocstringsfeature/timestretchfix/ffmpeg5
Last change on this file since 78561f7 was 4120fbc, checked in by Paul Brossier <piem@piem.org>, 8 years ago

python/demos: python3 and double precision compatibility

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1#! /usr/bin/env python
2
3from aubio import filterbank
4from numpy import arange, vstack
5
6win_s = 8192
7samplerate = 16000
8
9f = filterbank(40, win_s)
10f.set_mel_coeffs_slaney(samplerate)
11
12from pylab import loglog, title, show, xlim, ylim, xlabel, ylabel
13xlim([0,samplerate / 2])
14times = vstack([arange(win_s // 2 + 1) * samplerate / win_s] * 40)
15loglog(times.T, f.get_coeffs().T, '.-')
16title('Mel frequency bands coefficients')
17xlim([100, 7500])
18ylim([1.0e-3, 2.0e-2])
19xlabel('Frequency (Hz)')
20ylabel('Amplitude')
21show()
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