Changeset c853c1d


Ignore:
Timestamp:
Nov 17, 2018, 2:26:54 PM (10 months ago)
Author:
Paul Brossier <piem@piem.org>
Branches:
feature/autosink, feature/constantq, feature/pitchshift, feature/pydocstrings, feature/timestretch, master
Children:
517630f, a5c6182
Parents:
be8b18b
Message:

[py] add tests for new filterbank methods

File:
1 edited

Legend:

Unmodified
Added
Removed
  • python/tests/test_filterbank_mel.py

    rbe8b18b rc853c1d  
    111111        f.set_triangle_bands(fvec(freq_list), samplerate)
    112112
     113    def test_triangle_freqs_without_norm(self):
     114        """make sure set_triangle_bands works without """
     115        samplerate = 22050
     116        freq_list = fvec([0, 100, 1000, 10000])
     117        f = filterbank(len(freq_list) - 2, 1024)
     118        f.set_norm(0)
     119        f.set_triangle_bands(freq_list, samplerate)
     120        expected = f.get_coeffs()
     121        f.set_norm(1)
     122        f.set_triangle_bands(fvec(freq_list), samplerate)
     123        assert_almost_equal(f.get_coeffs().T,
     124                expected.T * 2. / (freq_list[2:] - freq_list[:-2]))
     125
     126    def test_triangle_freqs_wrong_norm(self):
     127        f = filterbank(10, 1024)
     128        with self.assertRaises(ValueError):
     129            f.set_norm(-1)
     130
     131    def test_triangle_freqs_with_power(self):
     132        f = filterbank(9, 1024)
     133        freqs = fvec([40, 80, 200, 400, 800, 1600, 3200, 6400, 12800, 15000,
     134            24000])
     135        f.set_power(2)
     136        f.set_triangle_bands(freqs, 48000)
     137        spec = cvec(1024)
     138        spec.norm[:] = .1
     139        expected = fvec([0.02070313, 0.02138672, 0.02127604, 0.02135417,
     140            0.02133301, 0.02133301, 0.02133311, 0.02133334, 0.02133345])
     141        expected /= 100.
     142        assert_almost_equal(f(spec), expected)
     143
     144    def test_mel_coeffs(self):
     145        f = filterbank(40, 1024)
     146        f.set_mel_coeffs(44100, 0, 44100 / 2)
     147
     148    def test_zero_fmax(self):
     149        f = filterbank(40, 1024)
     150        f.set_mel_coeffs(44100, 0, 0)
     151
     152    def test_wrong_mel_coeffs(self):
     153        f = filterbank(40, 1024)
     154        with self.assertRaises(ValueError):
     155            f.set_mel_coeffs_slaney(0)
     156        with self.assertRaises(ValueError):
     157            f.set_mel_coeffs(44100, 0, -44100 / 2)
     158        with self.assertRaises(ValueError):
     159            f.set_mel_coeffs(44100, -0.1, 44100 / 2)
     160        with self.assertRaises(ValueError):
     161            f.set_mel_coeffs(-44100, 0.1, 44100 / 2)
     162        with self.assertRaises(ValueError):
     163            f.set_mel_coeffs_htk(-1, 0, 0)
     164
     165    def test_mel_coeffs_htk(self):
     166        f = filterbank(40, 1024)
     167        f.set_mel_coeffs_htk(44100, 0, 44100 / 2)
     168
     169
    113170if __name__ == '__main__':
    114171    import nose2
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