Showing the changes to python (1 of 1 file). Show all
Unified · Split
| @@ -0,0 +1,43 @@ | ||
| 1 | +#! /usr/bin/env python | |
| 2 | + | |
| 3 | +from nose2 import TestCase | |
| 4 | +import aubio | |
| 5 | + | |
| 6 | +class aubio_pitchshift(TestCase): | |
| 7 | + | |
| 8 | + def setUp(self): | |
| 9 | + self.o = aubio.pitchshift() | |
| 10 | + | |
| 11 | + def test_default_creation(self): | |
| 12 | + self.assertEqual(self.o.get_pitchscale(), 1) | |
| 13 | + self.assertEqual(self.o.get_transpose(), 0) | |
| 14 | + | |
| 15 | + def test_on_zeros(self): | |
| 16 | + test_length = 20000 | |
| 17 | + read = 0 | |
| 18 | + # test on zeros | |
| 19 | + vec = aubio.fvec(512) | |
| 20 | + transpose_range = 24 | |
| 21 | + while read < test_length: | |
| 22 | + # transpose the samples | |
| 23 | + out = self.o(vec) | |
| 24 | + self.assertTrue((out == 0).all()) | |
| 25 | + # position in the file (between 0. and 1.) | |
| 26 | + percent_read = read / float(test_length) | |
| 27 | + # variable transpose rate (in semitones) | |
| 28 | + transpose = 2 * transpose_range * percent_read - transpose_range | |
| 29 | + # set transpose rate | |
| 30 | + self.o.set_transpose(transpose) | |
| 31 | + read += len(vec) | |
| 32 | + | |
| 33 | + def test_transpose_too_high(self): | |
| 34 | + with self.assertRaises(ValueError): | |
| 35 | + self.o.set_transpose(24.3) | |
| 36 | + | |
| 37 | + def test_transpose_too_low(self): | |
| 38 | + with self.assertRaises(ValueError): | |
| 39 | + self.o.set_transpose(-24.3) | |
| 40 | + | |
| 41 | +if __name__ == '__main__': | |
| 42 | + from nose2 import main | |
| 43 | + main() | |