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Active Control System for Low Frequency Road Noise Combined with an Audio System

Article of Honda R&D Technical Review Vol.12 No.2

Summary

An active control system for low frequency road noise in automobiles combined with an audio system was developed as a commercial application for the first time in the world. The system was installed in a station wagon. The purpose of this paper is to provide an outline of the system and describe the newly developed cost reduction technology used therein. A major factor in the successful application of active noise control technology to a commercial product is reduced system cost. The methods used to reduce costs include utilization of feedback control, implementation by analogue circuits, and common use of audio system speakers. This system reduces low frequency road noise in the front seat by about 10 dB and improves the audio system listening experience while driving.

Reference

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Author (organization or company)

Hisashi SANO(Tochigi R&D Center)、Toshio INOUE(Tochigi R&D Center)、Akira TAKAHASHI(Tochigi R&D Center)、Dai ISHIHARA(Tochigi R&D Center)、Tsuyoshi YAMASHITA(Tochigi R&D Center)、Kenichi TERAI(Matsushita Electric Industrial Co., Ltd.)

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