Active Road Noise Cancellation

The active road noise cancellation system, developed by a technology company named Silentium, actively removes unwanted tire and road noise from the vehicle’s interior cabin.

Features of the Active Road Noise Cancellation System

Active road noise cancellation reduces overall noise by 3-4dB. This reduction is equivalent to lowering the sound system’s volume by four steps. In general, you probably can’t believe tires and the road make that much noise, right? But the truth is, they do. They produce a lot of noise.

Additionally, significant noise reduction at frequencies as low as 300 Hz reduces overall driver fatigue on long and tiring trips. Long trips generally bring driving fatigue with them. Fatigue reduces the ability to deal with unexpected events on the road, causing serious accidents.

According to research, a tired driver’s reaction time increases by 16.72% compared to a normal driver. This is because the human body gets tired from needing to stay awake longer, especially on long trips. This research shows that fatigue can lead to accidents.

Microphone Detection

The system detects road noise in real time using microphones placed around the wheel wells.

Anti-Phase Sound

By generating a sound in the opposite phase (anti-phase) to the detected noise, the two waves cancel each other out, providing silence inside the cabin.

Millisecond Response Time

Active noise cancellation systems work fast enough to process and respond to noise within milliseconds.

How Does Active Road Noise Cancellation Work?

This technology uses sensors that monitor vibrations on the road surface. It also calculates the counter-phase sound wave needed to cancel out the sound passengers hear. It cancels out sounds from potholes and rough road surfaces. The system isolates and eliminates the sound in real time.

vehicle active road noise cancellation system

Additionally, the canceling sounds are also played through the sound system. The sound system uses vehicle-monitored cabin occupancy to improve active road noise cancellation performance for passengers. For this reason, this technology delivers a refined, uncompromising, premium experience.

Additionally, active road noise cancellation further reduces engine noise cancellation and plug-in hybrid drivetrain sounds. This keeps the driver more comfortable and ready to react in dangerous situations.

Watch Active Road Noise Cancellation in Action

Video of the vehicle active road noise cancellation system

Related Questions

The system generates a sound wave in the opposite phase of the road noise it detects with microphones. This anti-phase wave overlaps with the original noise, largely canceling it out, making the cabin quieter.

Constant exposure to noise increases fatigue on long trips, and a tired driver’s reaction time also lengthens. Reducing noise helps the driver become less tired and react faster to hazards.