add a fix to support Chrome browser

app.py

@@ -27,6 +27,14 @@ def predict_dialect(audio):
     # Process the audio input
     if len(audio_array.shape) > 1:
         audio_array = audio_array.mean(axis=1)  # Convert stereo to mono
+
+    # Convert audio to float32 if it's not already (fix for Chrome recording issue)
+    if audio_array.dtype != np.float32:
+        # Normalize to [-1, 1] range as expected by the model
+        if audio_array.dtype == np.int16:
+            audio_array = audio_array.astype(np.float32) / 32768.0
+        else:
+            audio_array = audio_array.astype(np.float32)
     
     print(f"Processing audio: sample rate={sr}, shape={audio_array.shape}")