3 from numpy.testing import TestCase, run_module_suite
4 from numpy.testing import assert_equal, assert_almost_equal
5 from numpy import array, shape
6 from aubio import cvec, filterbank, float_type
8 class aubio_filterbank_mel_test_case(TestCase):
10 def test_slaney(self):
11 f = filterbank(40, 512)
12 f.set_mel_coeffs_slaney(16000)
14 assert_equal(shape (a), (40, 512/2 + 1) )
16 def test_other_slaney(self):
17 f = filterbank(40, 512*2)
18 f.set_mel_coeffs_slaney(44100)
20 #print "sum is", sum(sum(a))
21 for win_s in [256, 512, 1024, 2048, 4096]:
22 f = filterbank(40, win_s)
23 f.set_mel_coeffs_slaney(320000)
25 #print "sum is", sum(sum(a))
27 def test_triangle_freqs_zeros(self):
28 f = filterbank(9, 1024)
29 freq_list = [40, 80, 200, 400, 800, 1600, 3200, 6400, 12800, 15000, 24000]
30 freqs = array(freq_list, dtype = float_type)
31 f.set_triangle_bands(freqs, 48000)
33 assert_equal ( f(cvec(1024)), 0)
35 def test_triangle_freqs_ones(self):
36 f = filterbank(9, 1024)
37 freq_list = [40, 80, 200, 400, 800, 1600, 3200, 6400, 12800, 15000, 24000]
38 freqs = array(freq_list, dtype = float_type)
39 f.set_triangle_bands(freqs, 48000)
43 assert_almost_equal ( f(spec),
44 [ 0.02070313, 0.02138672, 0.02127604, 0.02135417,
45 0.02133301, 0.02133301, 0.02133311, 0.02133334, 0.02133345])
47 if __name__ == '__main__':
48 from unittest import main