4Silence: the diffractor supplier
As the supplier of the diffractor, we at 4Silence are in a position to handle traffic noise reduction in a cost-effective and durable way. By deflecting sound instead of absorbing it or turning it around, we manage to meet sound reduction standards cheaply and, above all, simply.
4Silence’s WHIS products are good solutions for the following situations:
- Cost-effective noise reduction
- Easy to install
- Quick to install
- Supported by residents
As a durable alternative to silent asphalt
The WHIS®stone achieves the same reduction as silent asphalt, but with the added benefit that the reduction doesn’t decrease over time, so you don’t have to replace it.
As a cheaper, environmentally friendlier alternative to a noise barrier
Even though the WHIS®wall is only 1 meter high, its noise reduction is similar to a 3 meter conventional noise barrier. This saves a lot of weight and time when building. In other words: you don’t have to lay a foundation, and you can produce up to 300 meters per day.
Of course this solution is also very nice for residents: the view is largely preserved.
Reduction: 7 to 9 dB
As an added reduction on top of (existing) noise barriers
When extra reduction is needed, you can add the WHIS®top. This lightweight aluminum diffractor is perfect for mounting on most existing noise barriers. At only 20 centimeters, it produces the same reduction you’d see from raising the barrier 2 meters.
It weighs only 40 kg m2 and doesn’t add any wind load. That makes it easy to install, since no expensive changes to the existing construction are required.
Extra reduction: 4 to 5 dB
4Silence solutions for reducing traffic noise
Noise pollution on the road
Noise pollution on railroads
Diffractor suppliers as mentioned in Geomilieu V5.21
4Silence is the first (and only) developer and supplier of the diffractor described in Geomilieu V5.21. At this point we deliver diffractors worldwide with the WHIS®stone, WHIS®wall, and WHIS®top.
Installing the products is simple and requires little explanation. Nonetheless, the products come with extensive instructions. Of course we’re also available 24/7 to deliver support where it’s needed.
Want to know more about the WHIS® diffractor products or about working together? Get in touch!
For more information or a non-binding telephone consultation:
What our clients say about us
’“With the WHISwall we were able to meet noise standards within a couple of days, and at a lower price than we’d budgeted initially.’
In addition to that, the neighborhood was very excited about these solutions. So for us at Prorail this was ideal!” – Happy contractor
- Reliable
- Fast & FLexible
- Personal & Involved
- Sharp prices
