Title: Active booming noise control system for automobiles

Authors: A. Kinoshita, T. Tabata, K. Doi, Y. Nakaji

Addresses: Senior Project Engineer, Vehicle Research Laboratory, Nissan Motor Co. Ltd., 1 Natsushima-cho, Yokosuka 237, Japan. ' Manager, Noise/Vibration Reduction Research Section, Vehicle Research Laboratory, Nissan Motor Co. Ltd., 1 Natsushima-cho, Yokosuka 237, Japan. ' Research Engineer, Vehicle Research Laboratory, Nissan Motor Co. Ltd., 1 Natsushima-cho, Yokosuka 237, Japan. ' Research Engineer, Vehicle Research Laboratory, Nissan Motor Co. Ltd., 1 Natsushima-cho, Yokosuka 237, Japan

Abstract: A basic study on active noise control (ANC) was carried out with the aim of reducing booming noise. The interior sound field was analysed in terms of both time and spatial variability. The results showed that a multi-channel adaptive algorithm is necessary for global control. In addition, acoustic system optimization was studied to maximize control performance. As a result, a prototype ANC system was built and tests conducted in an actual vehicle revealed that it reduced booming noise by more than 10 dB.

Keywords: acoustic systems; active noise control; booming noise; sound pressure; speakers; vehicle vibration; vehicle noise; vehicle design.

DOI: 10.1504/IJVD.1994.061909

International Journal of Vehicle Design, 1994 Vol.15 No.1/2, pp.108 - 118

Published online: 28 May 2014 *

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