Presentation	1998/5/29 A Simple Prediction Method of Road Traffic Noise Yasuaki OKADA, Yohzoh OKUMURA, Koichi YOSHIHISA, Kazuhiro KUNO,
PDF Download Page	PDF download Page Link
Abstract(in Japanese)	(See Japanese page)
Abstract(in English)	In this paper, a simple prediction method calculating L_ of road traffic noise is proposed. This method is given by a simple expression which includes attenuation due to geometrical spreadings, the correction term α_d for diffraction and the correction term α_ for ground effects. The correction term α_ is similar to α_i in ASJ Model-1975. The derivation method of α_ was discussed and the some α_ are determined using an empirical model. We also formulate α_ by introducing the factor of excess attenuation which decreases exponentially with the distance from the vehicle i.e. a sound source.
Keyword(in Japanese)	(See Japanese page)
Keyword(in English)	Road Traffic Noise / Prediction Model / Sound Propagation / Excess Attenuation / Ground Effect
Paper #
Date of Issue

Conference Information
Committee	EA
Conference Date	1998/5/29(1days)
Place (in Japanese)	(See Japanese page)
Place (in English)
Topics (in Japanese)	(See Japanese page)
Topics (in English)
Chair
Vice Chair
Secretary
Assistant

Paper Information
Registration To	Engineering Acoustics (EA)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	A Simple Prediction Method of Road Traffic Noise
Sub Title (in English)
Keyword(1)	Road Traffic Noise
Keyword(2)	Prediction Model
Keyword(3)	Sound Propagation
Keyword(4)	Excess Attenuation
Keyword(5)	Ground Effect
1st Author's Name	Yasuaki OKADA
1st Author's Affiliation	Japan Weather Association()
2nd Author's Name	Yohzoh OKUMURA
2nd Author's Affiliation	Nagoya Municipal Indus.Res.Inst.
3rd Author's Name	Koichi YOSHIHISA
3rd Author's Affiliation	Faculty of Science and Technology, Meijo Univ.
4th Author's Name	Kazuhiro KUNO
4th Author's Affiliation	Faculty of Engineering, Mie Univ.
Date	1998/5/29
Paper #
Volume (vol)	vol.98
Number (no)	82
Page	pp.pp.-
#Pages	8
Date of Issue