less padding, new padding mode.

inference.py

@@ -65,12 +65,8 @@ def mel_to_wav(net, netcpp, mel, config):
     """convert mel to wav"""
     if len(mel.shape) == 2:
         mel = mel[None]
-    pad = config["num_pad_frames"] // 2 + 4
-    mel = np.pad(
-        mel,
-        [(0, 0), (pad, pad), (0, 0)],
-        constant_values=np.log(config["mel_min"]),
-    )
+    pad = config["num_pad_frames"] // 2 + 2
+    mel = np.pad(mel, [(0, 0), (pad, pad), (0, 0)], mode="edge")
     ft = wavegru_inference(net, mel)
     ft = jax.device_get(ft[0])
     wav = netcpp.inference(ft, 1.0)