Update app.py

app.py

@@ -80,6 +80,9 @@ if len(audio) > 0:
     st.audio(audio.export().read())  
 
     # To save audio to a file, use pydub export method:
+    # https://docs.streamlit.io/develop/concepts/architecture/caching
+    # @st.cache_data
+    @st.cache_data
     audio.export("audio.wav", format="wav")
 
     # To get audio properties, use pydub AudioSegment properties: