Changeset c853c1d

Timestamp:

Nov 17, 2018, 2:26:54 PM (6 years ago)

Author:

Paul Brossier <piem@piem.org>

Branches:

feature/autosink, feature/cnn, feature/cnn_org, feature/constantq, feature/crepe, feature/crepe_org, feature/pitchshift, feature/pydocstrings, feature/timestretch, fix/ffmpeg5, master

Children:

517630f, a5c6182

Parents:

be8b18b

Message:

[py] add tests for new filterbank methods

File:

• python/tests/test_filterbank_mel.py (modified) (1 diff)

python/tests/test_filterbank_mel.py

@@ -111 +111 @@
         f.set_triangle_bands(fvec(freq_list), samplerate)
 
+    def test_triangle_freqs_without_norm(self):
+        """make sure set_triangle_bands works without """
+        samplerate = 22050
+        freq_list = fvec([0, 100, 1000, 10000])
+        f = filterbank(len(freq_list) - 2, 1024)
+        f.set_norm(0)
+        f.set_triangle_bands(freq_list, samplerate)
+        expected = f.get_coeffs()
+        f.set_norm(1)
+        f.set_triangle_bands(fvec(freq_list), samplerate)
+        assert_almost_equal(f.get_coeffs().T,
+                expected.T * 2. / (freq_list[2:] - freq_list[:-2]))
+
+    def test_triangle_freqs_wrong_norm(self):
+        f = filterbank(10, 1024)
+        with self.assertRaises(ValueError):
+            f.set_norm(-1)
+
+    def test_triangle_freqs_with_power(self):
+        f = filterbank(9, 1024)
+        freqs = fvec([40, 80, 200, 400, 800, 1600, 3200, 6400, 12800, 15000,
+            24000])
+        f.set_power(2)
+        f.set_triangle_bands(freqs, 48000)
+        spec = cvec(1024)
+        spec.norm[:] = .1
+        expected = fvec([0.02070313, 0.02138672, 0.02127604, 0.02135417,
+            0.02133301, 0.02133301, 0.02133311, 0.02133334, 0.02133345])
+        expected /= 100.
+        assert_almost_equal(f(spec), expected)
+
+    def test_mel_coeffs(self):
+        f = filterbank(40, 1024)
+        f.set_mel_coeffs(44100, 0, 44100 / 2)
+
+    def test_zero_fmax(self):
+        f = filterbank(40, 1024)
+        f.set_mel_coeffs(44100, 0, 0)
+
+    def test_wrong_mel_coeffs(self):
+        f = filterbank(40, 1024)
+        with self.assertRaises(ValueError):
+            f.set_mel_coeffs_slaney(0)
+        with self.assertRaises(ValueError):
+            f.set_mel_coeffs(44100, 0, -44100 / 2)
+        with self.assertRaises(ValueError):
+            f.set_mel_coeffs(44100, -0.1, 44100 / 2)
+        with self.assertRaises(ValueError):
+            f.set_mel_coeffs(-44100, 0.1, 44100 / 2)
+        with self.assertRaises(ValueError):
+            f.set_mel_coeffs_htk(-1, 0, 0)
+
+    def test_mel_coeffs_htk(self):
+        f = filterbank(40, 1024)
+        f.set_mel_coeffs_htk(44100, 0, 44100 / 2)
+
+
 if __name__ == '__main__':
     import nose2