Update app.py

app.py

@@ -29,9 +29,10 @@ if uploaded_audio is not None:
         channels=1
     )
 
-    # Slow down the audio
+    # Slow down the audio by changing the frame rate
     st.write("Slowing down audio...")
-    slowed_audio = reduced_audio.speedup(playback_speed=0.7)
+    slowed_sample_rate = int(sample_rate * 0.7)
+    slowed_audio = reduced_audio.set_frame_rate(slowed_sample_rate)
 
     # Export the slowed audio to a file
     slowed_audio.export("output_audio.wav", format="wav")