MainWindow 0 0 932 461 MainWindow 0 Tab 1 input format input device output format output device start take voice and play start take voice and play (default device) stop (optional) refresh device list input volume Qt::Horizontal output volume Qt::Horizontal sound effect 1 sound effect 2 sound effect 3 I record this voice Tab 2 50 20 171 41 record 0 240 20 171 41 play record 0 50 60 171 41 stop record 240 60 171 41 stop playing