[75e715f] | 1 | #! /usr/bin/env python |
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[5e3ed60] | 2 | |
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[e116e19] | 3 | import numpy as np |
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| 4 | from numpy.testing import TestCase, assert_equal, assert_almost_equal |
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| 5 | |
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[e33d960] | 6 | from aubio import fvec, cvec, filterbank, float_type |
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[5e3ed60] | 7 | |
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[9a52962] | 8 | import warnings |
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| 9 | warnings.filterwarnings('ignore', category=UserWarning, append=True) |
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| 10 | |
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[5e3ed60] | 11 | class aubio_filterbank_mel_test_case(TestCase): |
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| 12 | |
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[0b6d23d] | 13 | def test_slaney(self): |
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| 14 | f = filterbank(40, 512) |
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| 15 | f.set_mel_coeffs_slaney(16000) |
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| 16 | a = f.get_coeffs() |
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[e116e19] | 17 | assert_equal(np.shape (a), (40, 512/2 + 1) ) |
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[0b6d23d] | 18 | |
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| 19 | def test_other_slaney(self): |
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| 20 | f = filterbank(40, 512*2) |
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| 21 | f.set_mel_coeffs_slaney(44100) |
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[e116e19] | 22 | self.assertIsInstance(f.get_coeffs(), np.ndarray) |
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[0b6d23d] | 23 | #print "sum is", sum(sum(a)) |
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| 24 | for win_s in [256, 512, 1024, 2048, 4096]: |
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| 25 | f = filterbank(40, win_s) |
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| 26 | f.set_mel_coeffs_slaney(32000) |
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| 27 | #print "sum is", sum(sum(a)) |
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[e116e19] | 28 | self.assertIsInstance(f.get_coeffs(), np.ndarray) |
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[0b6d23d] | 29 | |
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| 30 | def test_triangle_freqs_zeros(self): |
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| 31 | f = filterbank(9, 1024) |
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| 32 | freq_list = [40, 80, 200, 400, 800, 1600, 3200, 6400, 12800, 15000, 24000] |
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[e116e19] | 33 | freqs = np.array(freq_list, dtype = float_type) |
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[0b6d23d] | 34 | f.set_triangle_bands(freqs, 48000) |
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| 35 | assert_equal ( f(cvec(1024)), 0) |
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[e116e19] | 36 | self.assertIsInstance(f.get_coeffs(), np.ndarray) |
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[0b6d23d] | 37 | |
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| 38 | def test_triangle_freqs_ones(self): |
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| 39 | f = filterbank(9, 1024) |
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| 40 | freq_list = [40, 80, 200, 400, 800, 1600, 3200, 6400, 12800, 15000, 24000] |
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[e116e19] | 41 | freqs = np.array(freq_list, dtype = float_type) |
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[0b6d23d] | 42 | f.set_triangle_bands(freqs, 48000) |
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[e116e19] | 43 | self.assertIsInstance(f.get_coeffs(), np.ndarray) |
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[0b6d23d] | 44 | spec = cvec(1024) |
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| 45 | spec.norm[:] = 1 |
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| 46 | assert_almost_equal ( f(spec), |
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| 47 | [ 0.02070313, 0.02138672, 0.02127604, 0.02135417, |
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| 48 | 0.02133301, 0.02133301, 0.02133311, 0.02133334, 0.02133345]) |
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[5e3ed60] | 49 | |
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[98c712e] | 50 | def test_triangle_freqs_with_zeros(self): |
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| 51 | """make sure set_triangle_bands works when list starts with 0""" |
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| 52 | freq_list = [0, 40, 80] |
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| 53 | freqs = np.array(freq_list, dtype = float_type) |
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| 54 | f = filterbank(len(freqs)-2, 1024) |
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| 55 | f.set_triangle_bands(freqs, 48000) |
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| 56 | assert_equal ( f(cvec(1024)), 0) |
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| 57 | self.assertIsInstance(f.get_coeffs(), np.ndarray) |
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| 58 | |
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[e33d960] | 59 | def test_triangle_freqs_with_wrong_negative(self): |
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| 60 | """make sure set_triangle_bands fails when list contains a negative""" |
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| 61 | freq_list = [-10, 0, 80] |
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| 62 | f = filterbank(len(freq_list)-2, 1024) |
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| 63 | with self.assertRaises(ValueError): |
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| 64 | f.set_triangle_bands(fvec(freq_list), 48000) |
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| 65 | |
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| 66 | def test_triangle_freqs_with_wrong_ordering(self): |
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| 67 | """make sure set_triangle_bands fails when list not ordered""" |
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| 68 | freq_list = [0, 80, 40] |
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| 69 | f = filterbank(len(freq_list)-2, 1024) |
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| 70 | with self.assertRaises(ValueError): |
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| 71 | f.set_triangle_bands(fvec(freq_list), 48000) |
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| 72 | |
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| 73 | def test_triangle_freqs_with_large_freq(self): |
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| 74 | """make sure set_triangle_bands warns when freq > nyquist""" |
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| 75 | samplerate = 22050 |
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| 76 | freq_list = [0, samplerate//4, samplerate // 2 + 1] |
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| 77 | f = filterbank(len(freq_list)-2, 1024) |
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| 78 | # TODO add assert_warns |
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| 79 | f.set_triangle_bands(fvec(freq_list), samplerate) |
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| 80 | |
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| 81 | def test_triangle_freqs_with_not_enough_filters(self): |
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| 82 | """make sure set_triangle_bands warns when not enough filters""" |
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| 83 | samplerate = 22050 |
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| 84 | freq_list = [0, 100, 1000, 4000, 8000, 10000] |
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| 85 | f = filterbank(len(freq_list)-3, 1024) |
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| 86 | # TODO add assert_warns |
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| 87 | f.set_triangle_bands(fvec(freq_list), samplerate) |
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| 88 | |
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| 89 | def test_triangle_freqs_with_too_many_filters(self): |
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| 90 | """make sure set_triangle_bands warns when too many filters""" |
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| 91 | samplerate = 22050 |
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| 92 | freq_list = [0, 100, 1000, 4000, 8000, 10000] |
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| 93 | f = filterbank(len(freq_list)-1, 1024) |
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| 94 | # TODO add assert_warns |
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| 95 | f.set_triangle_bands(fvec(freq_list), samplerate) |
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| 96 | |
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[693de50] | 97 | def test_triangle_freqs_with_double_value(self): |
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| 98 | """make sure set_triangle_bands works with 2 duplicate freqs""" |
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| 99 | samplerate = 22050 |
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| 100 | freq_list = [0, 100, 1000, 4000, 4000, 4000, 10000] |
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| 101 | f = filterbank(len(freq_list)-2, 1024) |
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| 102 | # TODO add assert_warns |
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| 103 | f.set_triangle_bands(fvec(freq_list), samplerate) |
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| 104 | |
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| 105 | def test_triangle_freqs_with_triple(self): |
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| 106 | """make sure set_triangle_bands works with 3 duplicate freqs""" |
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| 107 | samplerate = 22050 |
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| 108 | freq_list = [0, 100, 1000, 4000, 4000, 4000, 10000] |
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| 109 | f = filterbank(len(freq_list)-2, 1024) |
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| 110 | # TODO add assert_warns |
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| 111 | f.set_triangle_bands(fvec(freq_list), samplerate) |
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| 112 | |
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[c853c1d] | 113 | def test_triangle_freqs_without_norm(self): |
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| 114 | """make sure set_triangle_bands works without """ |
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| 115 | samplerate = 22050 |
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| 116 | freq_list = fvec([0, 100, 1000, 10000]) |
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| 117 | f = filterbank(len(freq_list) - 2, 1024) |
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| 118 | f.set_norm(0) |
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| 119 | f.set_triangle_bands(freq_list, samplerate) |
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| 120 | expected = f.get_coeffs() |
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| 121 | f.set_norm(1) |
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| 122 | f.set_triangle_bands(fvec(freq_list), samplerate) |
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| 123 | assert_almost_equal(f.get_coeffs().T, |
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| 124 | expected.T * 2. / (freq_list[2:] - freq_list[:-2])) |
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| 125 | |
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| 126 | def test_triangle_freqs_wrong_norm(self): |
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| 127 | f = filterbank(10, 1024) |
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| 128 | with self.assertRaises(ValueError): |
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| 129 | f.set_norm(-1) |
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| 130 | |
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| 131 | def test_triangle_freqs_with_power(self): |
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| 132 | f = filterbank(9, 1024) |
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| 133 | freqs = fvec([40, 80, 200, 400, 800, 1600, 3200, 6400, 12800, 15000, |
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| 134 | 24000]) |
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| 135 | f.set_power(2) |
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| 136 | f.set_triangle_bands(freqs, 48000) |
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| 137 | spec = cvec(1024) |
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| 138 | spec.norm[:] = .1 |
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| 139 | expected = fvec([0.02070313, 0.02138672, 0.02127604, 0.02135417, |
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| 140 | 0.02133301, 0.02133301, 0.02133311, 0.02133334, 0.02133345]) |
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| 141 | expected /= 100. |
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| 142 | assert_almost_equal(f(spec), expected) |
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| 143 | |
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| 144 | def test_mel_coeffs(self): |
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| 145 | f = filterbank(40, 1024) |
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| 146 | f.set_mel_coeffs(44100, 0, 44100 / 2) |
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| 147 | |
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| 148 | def test_zero_fmax(self): |
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| 149 | f = filterbank(40, 1024) |
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| 150 | f.set_mel_coeffs(44100, 0, 0) |
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| 151 | |
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| 152 | def test_wrong_mel_coeffs(self): |
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| 153 | f = filterbank(40, 1024) |
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| 154 | with self.assertRaises(ValueError): |
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| 155 | f.set_mel_coeffs_slaney(0) |
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| 156 | with self.assertRaises(ValueError): |
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| 157 | f.set_mel_coeffs(44100, 0, -44100 / 2) |
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| 158 | with self.assertRaises(ValueError): |
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| 159 | f.set_mel_coeffs(44100, -0.1, 44100 / 2) |
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| 160 | with self.assertRaises(ValueError): |
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| 161 | f.set_mel_coeffs(-44100, 0.1, 44100 / 2) |
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| 162 | with self.assertRaises(ValueError): |
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| 163 | f.set_mel_coeffs_htk(-1, 0, 0) |
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| 164 | |
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| 165 | def test_mel_coeffs_htk(self): |
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| 166 | f = filterbank(40, 1024) |
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| 167 | f.set_mel_coeffs_htk(44100, 0, 44100 / 2) |
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| 168 | |
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| 169 | |
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[5e3ed60] | 170 | if __name__ == '__main__': |
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[e116e19] | 171 | import nose2 |
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| 172 | nose2.main() |
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