3 from unittest import main
4 from numpy.testing import TestCase
5 from numpy.testing import assert_equal, assert_almost_equal
6 from numpy import array, shape
7 from aubio import cvec, filterbank, float_type
9 class aubio_filterbank_mel_test_case(TestCase):
11 def test_slaney(self):
12 f = filterbank(40, 512)
13 f.set_mel_coeffs_slaney(16000)
15 assert_equal(shape (a), (40, 512/2 + 1) )
17 def test_other_slaney(self):
18 f = filterbank(40, 512*2)
19 f.set_mel_coeffs_slaney(44100)
21 #print "sum is", sum(sum(a))
22 for win_s in [256, 512, 1024, 2048, 4096]:
23 f = filterbank(40, win_s)
24 f.set_mel_coeffs_slaney(32000)
26 #print "sum is", sum(sum(a))
28 def test_triangle_freqs_zeros(self):
29 f = filterbank(9, 1024)
30 freq_list = [40, 80, 200, 400, 800, 1600, 3200, 6400, 12800, 15000, 24000]
31 freqs = array(freq_list, dtype = float_type)
32 f.set_triangle_bands(freqs, 48000)
34 assert_equal ( f(cvec(1024)), 0)
36 def test_triangle_freqs_ones(self):
37 f = filterbank(9, 1024)
38 freq_list = [40, 80, 200, 400, 800, 1600, 3200, 6400, 12800, 15000, 24000]
39 freqs = array(freq_list, dtype = float_type)
40 f.set_triangle_bands(freqs, 48000)
44 assert_almost_equal ( f(spec),
45 [ 0.02070313, 0.02138672, 0.02127604, 0.02135417,
46 0.02133301, 0.02133301, 0.02133311, 0.02133334, 0.02133345])
48 if __name__ == '__main__':