Update app.py

app.py

@@ -95,7 +95,9 @@ def main():
             st.session_state.recording = not st.session_state.recording
             
             if st.session_state.recording:
-                st.session_state.recorder.start_recording(device_index=selected_device)
+                if 'recorder' not in st.session_state or st.session_state.recorder is None:
+                    st.session_state.recorder = AudioRecorder(device_index=selected_device)
+                st.session_state.recorder.start_recording()
                 st.success("Recording started...")
             else:
                 st.session_state.recorder.stop_recording()
@@ -149,4 +151,4 @@ def main():
                 pass
 
 if __name__ == "__main__":
-    main()
+    main()