Update app.py

app.py

@@ -257,6 +257,9 @@ def tts_full(text: str, voice: str = "af_heart", speed: float = 1.0, format: str
 
     # Scale to 16-bit integer range
     audio_scaled = np.int16(audio_normalized * 32767)
+
+    if np.any(audio_scaled < -32768) or np.any(audio_scaled > 32767):
+        raise ValueError("Scaled audio data is outside the valid range for 16-bit WAV files.")
     
     if format.lower() == "wav":