Update app.py

app.py

@@ -13,7 +13,7 @@ def load_audio(file_name):
     audio = pydub.AudioSegment.from_file(file_name)
     arr = np.array(audio.get_array_of_samples(), dtype=np.float32)
     arr = arr / (1 << (8 * audio.sample_width - 1))
-    return arr, audio.frame_rate
+    return arr.astype(np.float32), audio.frame_rate
 
 STYLE = """
 <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" integrity="sha256-YvdLHPgkqJ8DVUxjjnGVlMMJtNimJ6dYkowFFvp4kKs=" crossorigin="anonymous">