Auralization of railway noise

Emission synthesis of rolling and impact noise

Journal article (2017)

Authors

R.D. Pieren Aircraft Noise and Climate Effects - Aerospace Engineering , Swiss Federal Laboratories for Materials Science and Technology (Empa)
Kurt Heutschi Swiss Federal Laboratories for Materials Science and Technology (Empa)
Jean Marc Wunderli Swiss Federal Laboratories for Materials Science and Technology (Empa)
M. Snellen Aircraft Noise and Climate Effects - Aerospace Engineering
D.G. Simons Aircraft Noise and Climate Effects - Aerospace Engineering
Research Group
Aircraft Noise and Climate Effects (Aerospace Engineering) (TU Delft)
Auralization Sound synthesis Railway noise Rolling noise
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Published Date

01-12-2017

Language

English

Faculty

Aerospace Engineering

Department

Control & Operations

Research Group

Aircraft Noise and Climate Effects

Abstract

Within the research project TAURA, a traffic noise auralization system was developed that covers road traffic and railway noise. This paper focuses on an emission synthesizer for railway noise and presents a concept for rolling and impact noise. The synthesis is based on a physical approach in which the noise generation mechanism is modeled in the time domain. As a starting point, equivalent roughness patterns of each wheel and the rail are generated. These spatial signals are used to implicitly model the mechanical excitation of the wheel/rail system. Transfer paths describing the vibrational behavior and the radiation of wheels and rail are implemented as digital filters. This approach features a high degree of flexibility but requires knowledge of the detailed model parameters.