Update app.py

app.py

@@ -9,6 +9,7 @@ import logging
 import os
 import spaces
 import warnings
+import librosa
 
 # Set up logging
 logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
@@ -125,9 +126,14 @@ def text_to_speech(text, voice):
         raise
 
 def mel_to_audio(mel):
-    # Implement proper mel to audio conversion here
-    # For now, we'll return a placeholder audio
-    return np.zeros(24000, dtype=np.float32)  # Placeholder: 1 second of silence
+    try:
+        # Convert mel spectrogram to audio using librosa
+        audio = librosa.feature.inverse.mel_to_audio(mel, sr=24000, n_iter=10)
+        return audio
+    except Exception as e:
+        logger.error(f"Error in mel_to_audio conversion: {str(e)}")
+        # Return silence if conversion fails
+        return np.zeros(24000, dtype=np.float32)
 
 @spaces.GPU()
 def render_podcast(api_key, script, voice1, voice2, num_hosts):