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公开(公告)号:US20010046301A1
公开(公告)日:2001-11-29
申请号:US09864775
申请日:2001-05-24
发明人: Yoshio Nakamura , Toshihiko Ohashi , Kenichi Terai , Hiroyuki Hashimoto , Isao Kakuhari , Hisashi Sano , Toshio Inoue , Akira Takahashi , Tsuyoshi Yamashita
IPC分类号: H03B029/00
CPC分类号: G10K11/178 , G10K2210/12821 , G10K2210/3039
摘要: An active noise control system for reducing road noise of low frequency generated inside the cabin of a vehicle is provided. The active noise control system includes a noise detector, a signal generator for,processing the input noise signal to generate a signal for producing noise canceling waves, a limiting amplifier having a specified threshold value for variably amplifying the processed signal so that the amplitude of output signal will not exceed the threshold value, and an electrical acoustic converter for producing noise canceling acoustic waves in accordance with the output signal.
摘要翻译: 提供了一种用于减少车辆舱内产生的低频道路噪声的主动噪声控制系统。 有源噪声控制系统包括噪声检测器,用于处理输入噪声信号以产生产生噪声消除波的信号的信号发生器,具有指定阈值的限幅放大器,用于可变地放大经处理的信号,使得输出幅度 信号不超过阈值,以及用于根据输出信号产生噪声消除声波的电声转换器。