Hybrid source localization method to detect noisy vehicles traveling on the road

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Hybrid source localization method to detect noisy vehicles traveling on the road

Houzu, Hiroyuki / Tanaka, Takeharu / Sakamoto, Ichiro / Murakami, Takayuki / Ishihama, Masao / Sawatan, Katsumi

We aim to develop a noise source localization apparatus to detect the noisy vehicle from road traffic noise. This apparatus is consisted of microphone array, camera and processing computer. The microphone array is set upside of running vehicles. At first step of developing the apparatus, a new source localization technique apply to the real-world traffic stream is proposed in this article. Now various types of vehicle pass-by noise exist in traffic flow. Therefore traffic noise is broadband acoustic noise. Hence, wide frequency range is required for source localization method. Though, present methods can't cover such a wide frequency range by itself. When we try to locate traffic noise source by present method, it is required too big microphone array to install on the street. The new technique proposed here is called 'hybrid method'. The hybrid method consists of beamforming and sound intensity. Both methods are used properly according to frequency range. To verify the method, experimental tests have been carried out. The results of this study indicate that hybrid method is especially effective against low frequency noise source such as vehicles with noisy exhaust system. The hybrid method enables to locate moving noise source such as exhaust, engine and so on.

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Document information

Title :

Hybrid source localization method to detect noisy vehicles traveling on the road

Contributors:

Houzu, Hiroyuki (author) / Tanaka, Takeharu (author) / Sakamoto, Ichiro (author) / Murakami, Takayuki (author) / Ishihama, Masao (author) / Sawatan, Katsumi (author)

Published in:

Inter-Noise, International Congress and Exposition on Noise Control Engineering, 38 ; 2224-2230

Publication date :

2009

Size :

7 Seiten, 8 Bilder, 5 Quellen

ISBN :

978-1-61567-690-3

Type of media :

Conference paper

Type of material :

Language :