Update app.py

app.py

@@ -108,7 +108,15 @@ def decrypt_file(filepath, factor):
         frames = wav_file.readframes(wav_file.getnframes())
     
     samples = struct.unpack(f'{len(frames)//2}h', frames)
-    decrypted_data = ''.join(chr(int(sample / factor)) for sample in samples).encode('latin-1')
+    
+    # Use a list comprehension with error handling
+    decrypted_bytes = bytearray()
+    for sample in samples:
+        byte_value = int(round(sample / factor))
+        # Ensure the byte value is within the valid range (0-255)
+        decrypted_bytes.append(max(0, min(byte_value, 255)))
+    
+    decrypted_data = bytes(decrypted_bytes)
     
     # Detect original file type
     mime = magic.Magic(mime=True)