Changeset 6937842 for python

Timestamp:

Apr 28, 2016, 7:32:48 PM (9 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, pitchshift, sampler, timestretch, yinfft+

Children:

98e9d69

Parents:

92a8800

Message:

python/tests/test_phasevoc.py: add more tests

File:

• python/tests/test_phasevoc.py (modified) (2 diffs)

python/tests/test_phasevoc.py

@@ -40 +40 @@
             assert_equal ( r, 0)
 
+    def test_resynth_8_steps_sine(self):
+        """ check the resynthesis of is correct with 87.5% overlap """
+        hop_s = 1024
+        ratio = 8
+        freq = 445; samplerate = 22050
+        sigin = np.sin( 2. * np.pi * np.arange(hop_s).astype(float_type) * freq / samplerate)
+        r2 = self.reconstruction( sigin, hop_s, ratio)
+        error = ((r2 - sigin)**2).mean()
+        self.assertLessEqual(error , 1.e-3)
+
     def test_resynth_8_steps(self):
         """ check the resynthesis of is correct with 87.5% overlap """
-        hop_s = 256
+        hop_s = 1024
         ratio = 8
         sigin = np.random.rand(hop_s).astype(float_type) * 2. - 1.
+        r2 = self.reconstruction( sigin, hop_s, ratio)
+        error = ((r2 - sigin)**2).mean()
+        self.assertLessEqual(error , 1.e-2)
+
+    def test_resynth_4_steps(self):
+        """ check the resynthesis of is correct with 75% overlap """
+        hop_s = 1024
+        ratio = 4
+        sigin = np.random.rand(hop_s).astype(float_type) * 2. - 1.
+        r2 = self.reconstruction( sigin, hop_s, ratio)
+        error = ((r2 - sigin)**2).mean()
+        self.assertLessEqual(error , 1.e-2)
+
+    def reconstruction(self, sigin, hop_s, ratio):
         buf_s = hop_s * ratio
         f = pvoc(buf_s, hop_s)
@@ -51 +75 @@
         for i in range(1, ratio):
             r2 = f.rdo( f(zeros) )
-        r2 *= .5
-        assert_almost_equal ( r2 - sigin, 0., decimal = precision )
+        return r2
 
-    def test_resynth_4_steps(self):
-        """ check the resynthesis of is correct with 75% overlap """
-        hop_s = 256
-        ratio = 4
-        sigin = np.random.rand(hop_s).astype(float_type) * 2. - 1.
-        buf_s = hop_s * ratio
-        f = pvoc(buf_s, hop_s)
-        zeros = fvec(hop_s)
-        r2 = f.rdo( f(sigin) )
-        for i in range(1, ratio):
-            r2 = f.rdo( f(zeros) )
-        assert_almost_equal ( r2 - sigin, 0., decimal = precision )
-    
     def plot_this( self, this ):
         from pylab import semilogy, show