Examples of noise reduction.

In general, road noise is quantified in decibels (dB) and is referred to as a yearly average. What does noise reduction mean, and how does 3, 6 or even 10 dB really sound like? These examples show noise reduction of motorway noise reduced by 3, 6 and 10 dB.

0 dB means that the noise is undamped.


Please connect your headset to your computer. Make sure that the left and right channels are set correctly.

Start by pressing the black boxes. During playback you can jump between options.

You should not adjust the volume as this will change the adjustment you have already made in order to calibrate your system.

Danish Road Directorate logo
The auralisations are developed in cooperation with the Danish Road Directorate.