from numpy.testing import TestCase, assert_equal, assert_almost_equal
from _tools import assert_warns
-from aubio import cvec, filterbank, float_type
+from aubio import fvec, cvec, filterbank, float_type
class aubio_filterbank_mel_test_case(TestCase):
with assert_warns(UserWarning):
f.set_triangle_bands(freqs, 44100)
+ def test_triangle_freqs_with_zeros(self):
+ """make sure set_triangle_bands works when list starts with 0"""
+ freq_list = [0, 40, 80]
+ freqs = np.array(freq_list, dtype = float_type)
+ f = filterbank(len(freqs)-2, 1024)
+ f.set_triangle_bands(freqs, 48000)
+ assert_equal ( f(cvec(1024)), 0)
+ self.assertIsInstance(f.get_coeffs(), np.ndarray)
+
+ def test_triangle_freqs_with_wrong_negative(self):
+ """make sure set_triangle_bands fails when list contains a negative"""
+ freq_list = [-10, 0, 80]
+ f = filterbank(len(freq_list)-2, 1024)
+ with self.assertRaises(ValueError):
+ f.set_triangle_bands(fvec(freq_list), 48000)
+
+ def test_triangle_freqs_with_wrong_ordering(self):
+ """make sure set_triangle_bands fails when list not ordered"""
+ freq_list = [0, 80, 40]
+ f = filterbank(len(freq_list)-2, 1024)
+ with self.assertRaises(ValueError):
+ f.set_triangle_bands(fvec(freq_list), 48000)
+
+ def test_triangle_freqs_with_large_freq(self):
+ """make sure set_triangle_bands warns when freq > nyquist"""
+ samplerate = 22050
+ freq_list = [0, samplerate//4, samplerate // 2 + 1]
+ f = filterbank(len(freq_list)-2, 1024)
+ # TODO add assert_warns
+ f.set_triangle_bands(fvec(freq_list), samplerate)
+
+ def test_triangle_freqs_with_not_enough_filters(self):
+ """make sure set_triangle_bands warns when not enough filters"""
+ samplerate = 22050
+ freq_list = [0, 100, 1000, 4000, 8000, 10000]
+ f = filterbank(len(freq_list)-3, 1024)
+ # TODO add assert_warns
+ f.set_triangle_bands(fvec(freq_list), samplerate)
+
+ def test_triangle_freqs_with_too_many_filters(self):
+ """make sure set_triangle_bands warns when too many filters"""
+ samplerate = 22050
+ freq_list = [0, 100, 1000, 4000, 8000, 10000]
+ f = filterbank(len(freq_list)-1, 1024)
+ # TODO add assert_warns
+ f.set_triangle_bands(fvec(freq_list), samplerate)
+
+ def test_triangle_freqs_with_double_value(self):
+ """make sure set_triangle_bands works with 2 duplicate freqs"""
+ samplerate = 22050
+ freq_list = [0, 100, 1000, 4000, 4000, 4000, 10000]
+ f = filterbank(len(freq_list)-2, 1024)
+ # TODO add assert_warns
+ f.set_triangle_bands(fvec(freq_list), samplerate)
+
+ def test_triangle_freqs_with_triple(self):
+ """make sure set_triangle_bands works with 3 duplicate freqs"""
+ samplerate = 22050
+ freq_list = [0, 100, 1000, 4000, 4000, 4000, 10000]
+ f = filterbank(len(freq_list)-2, 1024)
+ # TODO add assert_warns
+ f.set_triangle_bands(fvec(freq_list), samplerate)
+
+
if __name__ == '__main__':
from unittest import main
main()