strip trailing silence padding in vocoder_chunked (single-chunk path)

python/infer_board.py

@@ -150,7 +150,8 @@ def vocoder_chunked(vocoder, mel):
     if T <= VOC_CHUNK:
         m = np.pad(mel, ((0, 0), (0, 0), (0, VOC_CHUNK - T)),
                    constant_values=-11.5)
-        return vocoder.run(None, {"mel": m})[0][0, 0]
+        w = vocoder.run(None, {"mel": m})[0][0, 0]
+        return w[:T * 256]  # strip trailing silence padding
     hop = VOC_CHUNK - VOC_OVERLAP
     starts = list(range(0, T, hop))
     frame = 256