Observatorio de I+D+i UPM

Descripción
The goal of this work is to propose a new strategy for the attenuation of the traffic noise, which constitutes one of the main sources of acoustic pollution in urban and suburban areas. This strategy is based on the measurement of the noise radiated by each individual vehicle using an electro-acoustic system, composed of two microphones for the acquisition of the engine and of the rolling noise. These microphones have been situated inside the engine hood and close to the right back tire respectively. The signals have been recorded for diesel and petrol engines and through typical urban and suburban courses with different persons. Using this procedure, we aim to characterise the drivers responsible of the highest noise levels producing maximum annoyance. The near-field measurements have been then extrapolated to far field positions using an analytical filter that takes into account absorbing properties of the propagation floor. For the internal signal it has been necessary to characterise the acoustic properties of the engine hood experimentally using an array of microphones surrounding the vehicle. The propagated noise is calculated considering the absorption due to the geometrical divergence, the absorption by the air, and the effect of the propagating surface. The signals extrapolated to the receiver position could be compared with the current normative to propose recommendations concerning noise control actions.
Internacional	Si
Nombre congreso	INTER-NOISE 2012/ ASME NCAD meeting
Tipo de participación	960
Lugar del congreso	New York, USA
Revisores	Si
ISBN o ISSN	0736-2935
DOI
Fecha inicio congreso	19/08/2012
Fecha fin congreso	23/08/2012
Desde la página	1
Hasta la página	12
Título de las actas	Proceedings of Inter Noise 2012

Esta actividad pertenece a memorias de investigación

• Autor: Teresa Bravo Maria (UPM)

• Creador: Departamento: Física e Instalaciones Aplicadas a la Edificación, al Medio Ambiente y al Urbanismo