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| 1 | +#! /usr/bin/env python | |
| 2 | + | |
| 3 | +from numpy.testing import TestCase, assert_equal, assert_almost_equal | |
| 4 | +from numpy import random, arange, log, zeros, count_nonzero | |
| 5 | +from aubio import mfcc, cvec, float_type | |
| 6 | +from math import pi | |
| 7 | + | |
| 8 | +buf_size = 2048 | |
| 9 | +n_filters = 40 | |
| 10 | +n_coeffs = 13 | |
| 11 | +samplerate = 44100 | |
| 12 | + | |
| 13 | +from nose2.tools import params | |
| 14 | + | |
| 15 | +new_params = ['buf_size', 'n_filters', 'n_coeffs', 'samplerate'] | |
| 16 | +new_deflts = [1024, 40, 13, 44100] | |
| 17 | + | |
| 18 | +class aubio_mfcc(TestCase): | |
| 19 | + | |
| 20 | + def setUp(self): | |
| 21 | + self.o = mfcc() | |
| 22 | + | |
| 23 | + def test_default_creation(self): | |
| 24 | + pass | |
| 25 | + | |
| 26 | + def test_delete(self): | |
| 27 | + del self.o | |
| 28 | + | |
| 29 | + @params(*new_params) | |
| 30 | + def test_read_only_member(self, name): | |
| 31 | + o = self.o | |
| 32 | + with self.assertRaises((TypeError, AttributeError)): | |
| 33 | + setattr(o, name, 0) | |
| 34 | + | |
| 35 | + @params(*zip(new_params, new_deflts)) | |
| 36 | + def test_default_param(self, name, expected): | |
| 37 | + """ test mfcc.{:s} = {:d} """.format(name, expected) | |
| 38 | + o = self.o | |
| 39 | + self.assertEqual( getattr(o, name), expected) | |
| 40 | + | |
| 41 | +class aubio_mfcc_wrong_params(TestCase): | |
| 42 | + | |
| 43 | + def test_wrong_buf_size(self): | |
| 44 | + with self.assertRaises(ValueError): | |
| 45 | + mfcc(buf_size = -1) | |
| 46 | + | |
| 47 | + def test_wrong_n_filters(self): | |
| 48 | + with self.assertRaises(ValueError): | |
| 49 | + mfcc(n_filters = -1) | |
| 50 | + | |
| 51 | + def test_wrong_n_coeffs(self): | |
| 52 | + with self.assertRaises(ValueError): | |
| 53 | + mfcc(n_coeffs = -1) | |
| 54 | + | |
| 55 | + def test_wrong_samplerate(self): | |
| 56 | + with self.assertRaises(ValueError): | |
| 57 | + mfcc(samplerate = -1) | |
| 58 | + | |
| 59 | +class aubio_mfcc_compute(TestCase): | |
| 60 | + | |
| 61 | + def test_members(self): | |
| 62 | + | |
| 63 | + o = mfcc(buf_size, n_filters, n_coeffs, samplerate) | |
| 64 | + #assert_equal ([o.buf_size, o.method], [buf_size, method]) | |
| 65 | + | |
| 66 | + spec = cvec(buf_size) | |
| 67 | + #spec.norm[0] = 1 | |
| 68 | + #spec.norm[1] = 1./2. | |
| 69 | + #print "%20s" % method, str(o(spec)) | |
| 70 | + coeffs = o(spec) | |
| 71 | + self.assertEqual(coeffs.size, n_coeffs) | |
| 72 | + #print coeffs | |
| 73 | + spec.norm = random.random_sample((len(spec.norm),)).astype(float_type) | |
| 74 | + spec.phas = random.random_sample((len(spec.phas),)).astype(float_type) | |
| 75 | + #print "%20s" % method, str(o(spec)) | |
| 76 | + self.assertEqual(count_nonzero(o(spec) != 0.), n_coeffs) | |
| 77 | + #print coeffs | |
| 78 | + | |
| 79 | + | |
| 80 | +class aubio_mfcc_all_parameters(TestCase): | |
| 81 | + | |
| 82 | + @params( | |
| 83 | + (2048, 40, 13, 44100), | |
| 84 | + (1024, 40, 13, 44100), | |
| 85 | + (512, 40, 13, 44100), | |
| 86 | + (512, 40, 13, 16000), | |
| 87 | + (256, 40, 13, 16000), | |
| 88 | + (128, 40, 13, 16000), | |
| 89 | + (128, 40, 12, 16000), | |
| 90 | + (128, 40, 13, 15000), | |
| 91 | + (512, 40, 20, 44100), | |
| 92 | + (512, 40, 40, 44100), | |
| 93 | + (512, 40, 3, 44100), | |
| 94 | + (1024, 40, 20, 44100), | |
| 95 | + #(1024, 30, 20, 44100), | |
| 96 | + (1024, 40, 40, 44100), | |
| 97 | + (1024, 40, 3, 44100), | |
| 98 | + ) | |
| 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 i in range(10): | |
| 105 | + coeffs = o(spec) | |
| 106 | + #print coeffs | |
| 107 | + | |
| 108 | +if __name__ == '__main__': | |
| 109 | + import nose2 | |
| 110 | + nose2.main() | |