Merge branch 'master' into feature/pytest
[aubio.git] / python / tests / test_mfcc.py
1 #! /usr/bin/env python
2
3 from _tools import parametrize, assert_raises
4 from numpy import random, count_nonzero
5 from numpy.testing import TestCase
6 from aubio import mfcc, cvec, float_type
7
8 buf_size = 2048
9 n_filters = 40
10 n_coeffs = 13
11 samplerate = 44100
12
13
14 new_params = ['buf_size', 'n_filters', 'n_coeffs', 'samplerate']
15 new_deflts = [1024, 40, 13, 44100]
16
17 class Test_aubio_mfcc(object):
18
19     members_args = 'name'
20
21     @parametrize(members_args, new_params)
22     def test_read_only_member(self, name):
23         o = mfcc()
24         with assert_raises((TypeError, AttributeError)):
25             setattr(o, name, 0)
26
27     @parametrize('name, expected', zip(new_params, new_deflts))
28     def test_default_param(self, name, expected):
29         """ test mfcc.{:s} = {:d} """.format(name, expected)
30         o = mfcc()
31         assert getattr(o, name) == expected
32
33 class aubio_mfcc_wrong_params(TestCase):
34
35     def test_wrong_buf_size(self):
36         with self.assertRaises(ValueError):
37             mfcc(buf_size = -1)
38
39     def test_wrong_n_filters(self):
40         with self.assertRaises(ValueError):
41             mfcc(n_filters = -1)
42
43     def test_wrong_n_coeffs(self):
44         with self.assertRaises(ValueError):
45             mfcc(n_coeffs = -1)
46
47     def test_wrong_samplerate(self):
48         with self.assertRaises(ValueError):
49             mfcc(samplerate = -1)
50
51     def test_wrong_input_size(self):
52         m = mfcc(buf_size = 1024)
53         with self.assertRaises(ValueError):
54             m(cvec(512))
55
56 class aubio_mfcc_compute(TestCase):
57
58     def test_members(self):
59
60         o = mfcc(buf_size, n_filters, n_coeffs, samplerate)
61         #assert_equal ([o.buf_size, o.method], [buf_size, method])
62
63         spec = cvec(buf_size)
64         #spec.norm[0] = 1
65         #spec.norm[1] = 1./2.
66         #print "%20s" % method, str(o(spec))
67         coeffs = o(spec)
68         self.assertEqual(coeffs.size, n_coeffs)
69         #print coeffs
70         spec.norm = random.random_sample((len(spec.norm),)).astype(float_type)
71         spec.phas = random.random_sample((len(spec.phas),)).astype(float_type)
72         #print "%20s" % method, str(o(spec))
73         self.assertEqual(count_nonzero(o(spec) != 0.), n_coeffs)
74         #print coeffs
75
76
77 class Test_aubio_mfcc_all_parameters(object):
78
79     run_values = [
80             (2048, 40, 13, 44100),
81             (1024, 40, 13, 44100),
82             (512, 40, 13, 44100),
83             (512, 40, 13, 16000),
84             (256, 40, 13, 16000),
85             (128, 40, 13, 16000),
86             (128, 40, 12, 16000),
87             (128, 40, 13, 15000),
88             (512, 40, 20, 44100),
89             (512, 40, 40, 44100),
90             (512, 40, 3, 44100),
91             (1024, 40, 20, 44100),
92             #(1024, 30, 20, 44100),
93             (1024, 40, 40, 44100),
94             (1024, 40, 3, 44100),
95             ]
96     run_args = ['buf_size', 'n_filters', 'n_coeffs', 'samplerate']
97
98     @parametrize(run_args, run_values)
99     def test_run_with_params(self, buf_size, n_filters, n_coeffs, samplerate):
100         " check mfcc can run with reasonable parameters "
101         o = mfcc(buf_size, n_filters, n_coeffs, samplerate)
102         spec = cvec(buf_size)
103         spec.phas[0] = 0.2
104         for _ in range(10):
105             o(spec)
106         #print coeffs
107
108
109 class aubio_mfcc_fb_params(TestCase):
110
111     def test_set_scale(self):
112         buf_size, n_filters, n_coeffs, samplerate = 512, 20, 10, 16000
113         m = mfcc(buf_size, n_filters, n_coeffs, samplerate)
114         m.set_scale(10.)
115         m(cvec(buf_size))
116
117     def test_set_power(self):
118         buf_size, n_filters, n_coeffs, samplerate = 512, 20, 10, 16000
119         m = mfcc(buf_size, n_filters, n_coeffs, samplerate)
120         m.set_power(2.)
121         m(cvec(buf_size))
122
123     def test_set_mel_coeffs(self):
124         buf_size, n_filters, n_coeffs, samplerate = 512, 20, 10, 16000
125         m = mfcc(buf_size, n_filters, n_coeffs, samplerate)
126         m.set_mel_coeffs(0., samplerate/2.)
127         m(cvec(buf_size))
128
129     def test_set_mel_coeffs_htk(self):
130         buf_size, n_filters, n_coeffs, samplerate = 512, 20, 10, 16000
131         m = mfcc(buf_size, n_filters, n_coeffs, samplerate)
132         m.set_mel_coeffs_htk(0., samplerate/2.)
133         m(cvec(buf_size))
134
135     def test_set_mel_coeffs_slaney(self):
136         buf_size, n_filters, n_coeffs, samplerate = 512, 40, 10, 16000
137         m = mfcc(buf_size, n_filters, n_coeffs, samplerate)
138         m.set_mel_coeffs_slaney()
139         m(cvec(buf_size))
140         assert m.get_power() == 1
141         assert m.get_scale() == 1
142
143 if __name__ == '__main__':
144     from _tools import run_module_suite
145     run_module_suite()