It’s a function that you can check your snoring volume during your sleep. To activate the ‘Snoring checker’ function, go to [More] > [Experiment Room], activate [Snoring checker] button and drag the ‘alarm list’ screen. Once the function is on, it will start analyzing your sound until the alarm goes off and show you the volume of the snoring on the screen. Be aware that you can’t play the sound since the function doesn’t provide recording.