Coenbrug
Sound dampening materials are going to be applied.
Van Den Kroonenberg prize2021
Our founders Ysbrand Wijnant and Eric de Vries have won the Van den Kroonenberg Prize.
Vreeland WHIS®barrier
We installed almost 300 meters WHIS®barrier for our client Provincie Utrecht. In this project we’ve combined our WHIS®top with a standard road safety barrier from Haitsma Beton.
SonoCat
Since january 2021 we are the supplier of a state of the art multifunctional spherical microphone. The SonoCat can measure various things like SPL, absorption, sound intensity level and Sound [...]
WHISSPER – fighting traffic noise exposure by diffraction
The EU-funded WHISSPER project will promote new technology developed by 4Silence, a company based in the Netherlands. Its revolutionary, yet simple and sustainable solution is based on the [...]
Venlo – WHIS®top
Project: WHIS®top A73 Zuiderbrug Venlo Client: Gemeente Venlo Contractor: 4Silence
The Lier – Low frequency diffractoren
Project: Low frequency diffractoren The Lier Client: Provincie Zuid Holland Contractor: 4Silence
Amersfoort – WHIS®wall
Project: WHIS®wall Amersfoort N221 Client: gemeente Amersfoort Contractor: 4Silence
Almere – WHIS®wall
Project: WHIS®wall Hagevoortdreef Almere Client: Gemeente Almere Contractor: 4Silence
Nijmegen WHIS®wall
Project: West wil groene buffer Opdrachtgever: Gemeente Nijmegen Aannemer: Roelofs
