4Silence wins Accenture Innovation Award

01/29/2015 4Silence

A prestigious award that has been awarded to the Whisstone. We are proud!

Article in the Volkskrant about the construction of the Whisstone in Hummelo

10/25/2014 4Silence

“The first noise reductive ‘ribbelstrook’ in the world has been implemented on Wednesday. Next to the new N314 in Hummelo reinforced concrete deflect the traffic […]

4Silence receives Young Technology Award

01/27/2014 4Silence

Ysbrand and Eric proudly accept the Young Technology Award.

Motor drivers test diffractors

11/11/2013 4Silence

The motor drivers action group tested the Whisstone.

Interview in the FD with Eric & Ysbrand about the invention of the Whisstone

11/2/2013 4Silence

An interview in the financial newspaper about the invention of the Whisstone with Eric de Vries and Ysbrand Wijnant from 4Silence.