088 - Outdoor noise propagation: integration terms of general equation for sound propagation model (spm)
Ciolfi A.
Abstract
This work describes the terms integration in general equation of SPM(propagation model due to vehicular traffic carried on by Ciolfi A.).This model take his origins from theoretic and experimental considerations and was founded on sound propagation law in free field without obstacles between source and receiver.Experimental part regard the introduction of environmental parameters that complete the sound characterization.During this experimental part we carriedon two kind of measurements.One on 24 hours for the territory and the other founded on short measurement(about 5-10 min and instantaneous).The short measurements was carried on the edge of the road.Moreover for each point was verified the entity and tipology of vehicular flux.SPM founds on existence of a detes bank relatively to emission levels.Through the transit condition was possible to determine the acoustical effects combined toinclination of the road,pavement of the road,flux velocity,type of vehicle,internal noise of the vehicle(tyre,engine,etc.).The model estimates the emission value to combine with adjunctive factors above mentioned through the emission of single vehicle for a referenced period(observation time)
Citation
Ciolfi A.: Outdoor noise propagation: integration terms of general equation for sound propagation model (spm), CD-ROM Proceedings of the Thirtheenth International Congress on Sound and Vibration (ICSV13), July 2-6, 2006, Vienna, Austria, Eds.: Eberhardsteiner, J.; Mang, H.A.; Waubke, H., Publisher: Vienna University of Technology, Austria, ISBN: 3-9501554-5-7
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