1 | from template import aubio_unit_template |
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2 | from localaubio import * |
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3 | |
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4 | buf_size = 4096 |
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5 | hop_size = 512 |
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6 | channels = 1 |
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7 | samplerate = 44100. |
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8 | |
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9 | class pitch_test_case(unittest.TestCase): |
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10 | |
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11 | def setUp(self, type = aubio_pitch_yinfft, mode = aubio_pitchm_freq): |
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12 | self.create(type=type) |
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13 | |
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14 | def create(self, type = aubio_pitch_yinfft, |
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15 | mode = aubio_pitchm_freq): |
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16 | self.type = type |
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17 | self.o = new_aubio_pitch(buf_size, hop_size, |
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18 | channels, int(samplerate), type, mode) |
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19 | |
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20 | def tearDown(self): |
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21 | del_aubio_pitch(self.o) |
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22 | |
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23 | def test_pitch(self): |
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24 | """ create and delete pitch """ |
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25 | pass |
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26 | |
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27 | def test_pitch_run_zeroes(self): |
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28 | """ run pitch on an empty buffer """ |
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29 | vec = new_fvec(buf_size, channels) |
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30 | out = new_fvec(1, channels) |
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31 | for i in range(100): |
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32 | aubio_pitch_do(self.o,vec, out) |
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33 | self.assertEqual(fvec_read_sample(out, 0, 0),0.) |
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34 | del vec |
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35 | |
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36 | def test_pitch_run_4_impulses(self): |
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37 | """ run pitch on a train of 4 impulses """ |
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38 | vec = new_fvec(buf_size, channels) |
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39 | out = new_fvec(1, channels) |
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40 | fvec_write_sample(vec,-1.,0, 0) |
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41 | fvec_write_sample(vec, 1.,0, buf_size/4) |
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42 | fvec_write_sample(vec,-1.,0, buf_size/2) |
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43 | fvec_write_sample(vec, 1.,0,3*buf_size/4) |
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44 | frequency = samplerate/2*4/buf_size |
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45 | for i in range(100): |
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46 | aubio_pitch_do(self.o,vec, out) |
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47 | self.assertEqual(fvec_read_sample(out, 0, 0),frequency) |
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48 | del vec |
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49 | |
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50 | def test_pitch_run_4_positive_impulses(self): |
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51 | """ run pitch on a train of 4 positive impulses of arbitrary size """ |
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52 | vec = new_fvec(buf_size, channels) |
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53 | out = new_fvec(1, channels) |
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54 | frequency = samplerate/2*8/buf_size |
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55 | for i in range(100): |
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56 | fvec_write_sample(vec, 2.-.01*i,0, 0) |
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57 | fvec_write_sample(vec, 2.-.01*i,0, buf_size/4) |
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58 | fvec_write_sample(vec, 2.-.01*i,0, buf_size/2) |
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59 | fvec_write_sample(vec, 2.-.01*i,0,3*buf_size/4) |
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60 | aubio_pitch_do(self.o,vec, out) |
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61 | self.assertAlmostEqual(fvec_read_sample(out, 0, 0),frequency,1) |
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62 | del vec |
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63 | |
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64 | def test_pitch_run_4_negative_impulses(self): |
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65 | """ run pitch on a train of 4 negative impulses of arbitrary size """ |
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66 | vec = new_fvec(buf_size, channels) |
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67 | out = new_fvec(1, channels) |
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68 | frequency = samplerate/2*8/buf_size |
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69 | for i in range(1,100): |
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70 | fvec_write_sample(vec,-.01*i,0, 0) |
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71 | fvec_write_sample(vec,-.01*i,0, buf_size/4) |
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72 | fvec_write_sample(vec,-.01*i,0, buf_size/2) |
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73 | fvec_write_sample(vec,-.01*i,0,3*buf_size/4) |
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74 | aubio_pitch_do(self.o,vec, out) |
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75 | self.assertAlmostEqual(fvec_read_sample(out, 0, 0),frequency,1) |
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76 | del vec |
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77 | |
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78 | def test_pitch_run_8_impulses(self): |
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79 | """ run pitch on a train of 8 impulses """ |
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80 | vec = new_fvec(buf_size, channels) |
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81 | out = new_fvec(1, channels) |
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82 | fvec_write_sample(vec, 1.,0, 0) |
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83 | fvec_write_sample(vec,-1.,0, buf_size/8) |
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84 | fvec_write_sample(vec, 1.,0, buf_size/4) |
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85 | fvec_write_sample(vec,-1.,0,3*buf_size/8) |
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86 | fvec_write_sample(vec, 1.,0, buf_size/2) |
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87 | fvec_write_sample(vec,-1.,0,5*buf_size/8) |
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88 | fvec_write_sample(vec, 1.,0,3*buf_size/4) |
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89 | fvec_write_sample(vec,-1.,0,7*buf_size/8) |
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90 | for i in range(100): |
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91 | aubio_pitch_do(self.o,vec, out) |
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92 | self.assertAlmostEqual(fvec_read_sample(out, 0, 0), |
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93 | samplerate/2/buf_size*8, 1) |
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94 | del vec |
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95 | |
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96 | """ |
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97 | class pitch_yin_test_case(pitch_test_case): |
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98 | def setUp(self, type = aubio_pitch_yin): |
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99 | self.create(type=type) |
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100 | |
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101 | class pitch_fcomb_test_case(pitch_test_case): |
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102 | def setUp(self, type = aubio_pitch_fcomb): |
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103 | self.create(type=type) |
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104 | |
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105 | class pitch_mcomb_test_case(pitch_test_case): |
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106 | def setUp(self, type = aubio_pitch_mcomb): |
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107 | self.create(type=type) |
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108 | |
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109 | class pitch_schmitt_test_case(pitch_test_case): |
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110 | def setUp(self, type = aubio_pitch_schmitt): |
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111 | self.create(type=type) |
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112 | """ |
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113 | |
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114 | if __name__ == '__main__': |
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115 | unittest.main() |
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