comparison tests/test_load_features.py @ 6:a35bd818d8e9 branch-tests

notebook to test music segments

 
 feat_loader = load_features.FeatureLoader(win2sec=8)
 
 
 def test_get_music_idx_from_bounds():
-    bounds = np.array([['0', '10.5', 'm']])#, 
-              #['10.5', '12.0', 's'],
-              #['12.0', '30.0', 'm']])
+    bounds = np.array([['0', '10.5', 'm']])
     sr = feat_loader.framessr2            
     music_bounds = feat_loader.get_music_idx_from_bounds(bounds, sr=sr)
     # upper bound minus half window size
     half_win_sec = 4.0  # assume 8-second window
     music_bounds_true = np.arange(np.round(sr * (np.float(bounds[-1, 1]) - half_win_sec)), dtype=int)

     
     
 def test_get_music_idx_from_bounds_short_segment():
     # anything less than half window size is not processed
     bounds = np.array([['0', '3.8', 'm']])
-    sr = feat_loader.framessr2            
+    sr = feat_loader.framessr2
     music_bounds = feat_loader.get_music_idx_from_bounds(bounds, sr=sr)
     music_bounds_true = np.array([])
+    assert np.array_equal(music_bounds, music_bounds_true)
+
+
+def test_get_music_idx_from_bounds_single_frame():
+    bounds = np.array([['0', '4.3', 'm']])
+    sr = feat_loader.framessr2         
+    music_bounds = feat_loader.get_music_idx_from_bounds(bounds, sr=sr)
+    music_bounds_true = np.array([0])
     assert np.array_equal(music_bounds, music_bounds_true)
 
 
 def test_get_music_idx_from_bounds_mix_segments():
     bounds = np.array([['0', '10.5', 'm'], 
               ['10.5', '3.0', 's'],
               ['13.5', '5.0', 'm']])
     sr = feat_loader.framessr2
     music_bounds = feat_loader.get_music_idx_from_bounds(bounds, sr=sr)
-    music_bounds_true = np.concatenate([np.arange(np.round(sr * (10.5-4.0)), dtype=int),
-                                        np.arange(np.round(sr * (13.5-4.0)), np.round(sr * (18.5-4.0)), dtype=int)])
+    half_win_sec = 4.0  # assume 8-second window
+    music_bounds_true = np.concatenate([np.arange(np.round(sr * (10.5 - half_win_sec)), dtype=int),
+                                        np.arange(np.round(sr * (13.5 - half_win_sec)), 
+                                            np.round(sr * (18.5 - half_win_sec)), dtype=int)])
     assert np.array_equal(music_bounds, music_bounds_true)
     
+
+def test_get_music_idx_from_bounds_overlap_segments():
+    bounds = np.array([['0', '10.5', 'm'], 
+              ['9.5', '3.0', 's'],
+              ['11.5', '5.0', 'm']])
+    sr = feat_loader.framessr2
+    music_bounds = feat_loader.get_music_idx_from_bounds(bounds, sr=sr)
+    half_win_sec = 4.0  # assume 8-second window
+    music_bounds_true = np.concatenate([np.arange(np.round(sr * (10.5 - half_win_sec)), dtype=int),
+                                        np.arange(np.round(sr * (11.5 - half_win_sec)), 
+                                            np.round(sr * (16.5 - half_win_sec)), dtype=int)])
+    assert np.array_equal(music_bounds, music_bounds_true)
+
+