Diffraction is durable
4Silence makes products that reduce noise alongside roads, highways, and railways. The WHIS®stone, WHIS®wall, WHIS®top and WHIS®barrier all work through the principle of diffraction. This gives our products many benefits compared to other solutions: they leave views intact, they’re cheaper, and they’re simple and fast to install. They can also easily achieve extra noise reduction in existing situations.
- Reducing noise while preserving views
- More cost-effective
- More durable
- Easy to install
4Silence solutions for reducing traffic noise
Noise pollution
on the road
Noise pollution
on railroads
Our solutions for reducing traffic noise
What we stand for:
Lower
costs
Installing the products is quick and easy. No (extra) foundation is needed, so the building process isn’t slowed down.
Environmentally
friendly
All our products benefit (people in) the environment: views remain almost entirely intact in most cases, for both (train) travelers and residents.
A deal’s a deal
We’re a practical and down-to-earth group of people: we do what we say and we say what we do.
Proven
noise reduction
As a spin-off of Twente University, we attach a great deal of value to proving the effectiveness of our products through science.
Sustainable
solutions
Unlike solutions like silent asphalt, our products remain fully effective throughout their entire life span (>30 years
Wide-ranging expertise
The 4Silence team consists of a combination of (rail)road construction experts and acoustical engineers. Together we’ve created a solution that not only works very well, but also is easy to apply.
“No one should suffer from the growing demand for mobility and the (increasing) traffic noise that comes with it.”
Ysbrand Wijnant, inventor of the diffractor
