discard last hop (half-silent by definition)

Author: Vincent Lostanlen

DeepInstruments/singlelabel.py

@@ -229,7 +229,7 @@ def chunk(self, test_stems):
             for file_id in range(len(X[instrument_id])):
                 Y_id = Y_hop - 1
                 last_index = indices[instrument_id][file_id][-1]
-                while Y_id < last_index:
+                while Y_id < (last_index-Y_hop):
                     Y_chunk = Y[instrument_id][file_id][:, Y_id]
                     if np.max(Y_chunk) > 0.5:
                         X_id = int(Y_id * 2048.0 / self.hop_length)