4Silence stands for reducing noise pollution by traffic. Sustainable noise reduction, innovative solutions, scientifically founded, proven results. We already developed several innovations, which we call our WHIS®solutions.
By reducing traffic noise, 4Silence has developed a diffracting element: The WHIS®stone The diffractor is a concrete element with cavities that can be installed next to the road surface.
The newest product of 4Silence is an application of the existing WHIS®stone. By adding the diffractor to a sound barrier, the applicability of the Whisstone directly becomes more useful.
an innovative add-on for existing noise barriers