Geluid immissiemetingen van Thalys passages op het HSL spoor bij twee woningen in Breda

TNO heeft in opdracht van ProRail de geluidimmissieniveaus gemeten van de Thalys hogesnelheidstreinen die op het HSL-Zuid spoor met hoge snelheid rijden, bij twee woningen in de gemeente Breda. Tijdens dit onderzoek rijden er geen Ansaldo V250 treinen op dit deel van het HSL traject. De metingen in Breda maken deel uit van breder opgezet...

Geluidimmissie van Thalys en Ansaldo V250 treinen op het HSL spoor bij vier woningen in Lansingerland

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

Model based monitoring of urban traffic noise: Field test results for road side and shielded sides

Urban traffic noise can be a major issue for people and (local) governments. On a local scale the use of measurements is increasing, especially when measures or changes to the local infrastructure are proposed. However, measuring (only) urban traffic noise is a challenging task. By using a model based monitoring system, consisting of a scalable...

Far field effects of complex noise barrier reflections

Within the EU FP7 QUIESST project, QUIeting the Environment for a Sustainable Surface Transport, a test method is being developed for the reflectivity of noise barriers. The method needs to account for a complex shape of barriers and the use of various types of absorbing materials. The performance of a barrier is to be measured in the near field...

Holistic optimization of noise barriers from acoustical and non-acoustical parameters

We present the last results obtained within WP5 "Holistic optimizations" of the QUIESST European Project dedicated to the assessment of Noise Reducing Devices' acoustical performances. A first task was a state of the art of existing methods followed by choices of best solutions for holistic optimizations of complex-shape noise barriers. Results...

Instructions for processing of near field reflectivity test data and derivation of far field reflectivity indicators

Sound reflectivity is one of the intrinsic acoustical characteristics of noise reducing devices (NRD’s). It describes which percentage of an incident sound field is reflected back towards the opposite side of the road. The reflectivity is determined by the absorption properties of the material of the NRD as well as by the geometrical shape of...

Final report of QUIESST WP 2 – Extrapolation of near field Reflection Index data to far field reflection performance indicators

Sound reflectivity is one of the intrinsic acoustical characteristics of noise barriers. It describes which percentage of an incident sound field is reflected back towards the opposite side of the road. The reflectivity is determined by the absorption properties of the material of the barrier as well as by the geometrical shape of the barrier,...

Numerical simulation of the sound reflection effects of noise barriers in near and far field

This paper deals with the first stages of the development of a new test method for evaluating the reflectivity performance of noise barriers. The reflectivity performance describes the increase in sound level at a receiver due to the presence of the noise barrier. First the current test method for sound reflectivity is simulated with three...

Simulating complex noise barrier reflections

Within the EU FP7 QUIESST project, QUIeting the Environment for a Sustainable Surface Transport, a test method is being developed for the reflectivity of noise barriers. The method needs to account for a complex shape of barriers and the use of various types of absorbing materials. The performance of a barrier is to be measured in the near field...