We have developed the active control system for low frequency road noise in automobiles combined with an audio system. It is the first commercial application in the world. This system adopts feedback control in the front seats and feedforward control in the rear seat, furthermore a music compensation circuit is applied. So it reduces only the noise in the front seats about 10 dB without canceling out the music. As the result, it is comfortable to the passengers to listen to the music.

Authors: Hashimoto, Hiroyuki; Terai, Kenichi; Kakuhari, Isao; Nakamura, Yoshio; Sano, Hisashi
Affiliations: Matsushita Electric Industrial Co., Ltd., Osaka, Japan ; Matsushita Electronic Components Co., Ltd., Osaka, Japan ; Honda R&D Co., Ltd., Tochigi, Japan(See document for exact affiliation information.)
AES Convention: 111 (November 2001) Paper Number: 5430
Publication Date: November 1, 2001
Session Subject: Mobile and Internet Audio; Audio Networking; Loudspeakers

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