If a time signal (often referred to as a raw signal as it comes directly from the sensor) is open, audio playback is possible using the audio analysis function. This enables an additional sensory organ to be used to detect damage. Experienced maintenance engineers can identify irregularities or damage from the sound. The audio analysis can be switched on and off directly in the time signal chart.

The Play and Stop buttons can be used to start and stop playback of the audio signal.