Model based monitoring for industrial and traffic noise control

Noise control starts by understanding the actual noise situation. Especially for situations where the distance between industrial and traffic noise sources and a local community is in the order of one kilometer or more, it may not be clear what sources are the main contributors to annoyance. Then a combination of monitoring and modeling is...

Acoustic Signature Monitoring and Management of Naval Platforms

Acoustic signatures make naval platforms susceptible to detection by threat sensors. The variable operational conditions and lifespan of a platform cause variations in the acoustic signature. To deal with these variations, a real time signature monitoring capability is being developed, with advisory tools for signature management. Such a...

Measured and calculated noise reduction of rail dampers and absorption plates on a high speed slab track

Rail dampers and sound absorbing plates have been tested on a high speed railway slab track in a walled cutting at a noise sensitive location. Their noise reduction has been determined from pass-by measurements during service and predicted using BEM calculations. The cutting depth, noise barrier height and configuration vary along the length of...

Monitoring of traffic noise in an urban area using a wireless sensor network

Developments in systems for monitoring environmental noise have made it possible to monitor the acoustic situation within large urban areas. The developments in hardware size and costs, combined with the developments in wireless communication allow to deploy networks with many acoustic sensors without much effort. An application of such a sensor...

Model based monitoring of traffic noise in an urban district

Noise control for an urban district starts by understanding the actual noise situation. A correct understanding is needed to take appropriate and cost efficient measures. For a noise burdened urban district, surrounded by road and rail traffic, the traffic noise as well as the annoyance has been measured. The size of the district is...

Urban traffic noise assessment by combining measurement and model results

A model based monitoring system is applied on a local scale in an urban area to obtain a better understanding of the traffic noise situation. The system consists of a scalable sensor network and an engineering model. A better understanding is needed to take appropriate and cost efficient measures, especially when changes to the local...

Geluidimmissie van Thalys en Ansaldo V250 treinen op het HSL spoor bij twee woningen in Kaag en Braassem

TNO heeft in opdracht van ProRail de geluidimmissieniveaus gemeten van de Ansaldo V250 en de Thalys hogesnelheidstreinen die op het spoor van de HSL-Zuid met hoge snelheid rijden, bij twee woningen in de gemeente Kaag en Braassem. Tijdens dit onderzoek rijden er treinen van het type Ansaldo V250, Thalys en Prio op dit deel van het HSL tracé. De...