INTER-NOISE 2001 - ABSTRACTS FROM INTERNATIONAL CONGRESS AND EXHIBITION ON NOISE CONTROL ENGINEERING · 2001 · 11 citations · 0 references
AeroacousticsArray ProcessingEngineering Noise ControlEngineeringNoise ControlNew Spiral ArrayNoiseMicrophone ArraySpiral Array MeasurementsInstrumentationAcoustic Signal ProcessingSignal ProcessingElectromagnetic CompatibilityBogie Shrouds
A high performing microphone array enables localization and quantification of noise from high-speed trains. So far, most reported results suffer from bad resolution and a high degree of measurement noise due to disturbing side lobes. However, the new spiral array, developed at the Deutsche Bahn AG's Research Center, produces results with a good resolution and S/N ratio, demonstrated by high-speed train measurements, including the German ICE 1, ICE 2 and ICE- T trains as well as the Italian ETR 500 train, partially equipped with bogie shrouds and multi-layer damped wheel. The importance of the relevant sound sources is discussed. (A) For the covering abstract see ITRD E113232.