Update app.py

app.py

@@ -87,6 +87,7 @@ def infer1(text):
 import numpy as np
 import torch
 from hifi_gan_bwe import BandwidthExtender
+from scipy.io.wavfile import write
 
 MAX_LENGTH = 600.0
 
@@ -103,8 +104,9 @@ def extend(audio):
         y = np.stack([model(torch.from_numpy(x), fs) for x in x.T]).T
         y = (y * 32767.0).astype(np.int16)
         fs = int(model.sample_rate)
+        write("upsample.wav", fs, y)
 
-    return fs, y
+    return "upsample.wav"
 
 
 app = gr.Blocks()