Isao Kakuhari
Panasonic
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Publication
Featured researches published by Isao Kakuhari.
Journal of the Acoustical Society of America | 1990
Toshio Inoue; Hisashi Sano; Akira Takahashi; Kenichi Terai; Hiroyuki Hashimoto; Isao Kakuhari
An active noise control system is provided which cancels noise using a sound which is radiated from a speaker which is driven by an output from an adaptive notch filter. The system uses the output signals from an adder or a cosine wave simulation signal and a sine wave simulation signal, an error signal or an output signal from a microphone and a compensated signal from the adder or a signal representative of an acoustic transmission of an output from the adaptive notch filter to the microphone is available with initial transmission characteristics in accordance to update the filter coefficients of the adaptive notch filter. This configuration allows the system to operate with stability even if modify the acoustic transmission characteristics with time or under certain circumstances, if a significant value of the incoming external noise exists. The system also prevents the over-compensation for a sound at the ears of a passenger in a vehicle, whereby an ideal noise reduction effect is provided.
Archive | 1999
Kenichi Terai; Hiroyuki Hashimoto; Isao Kakuhari
Archive | 2003
Hiroyuki Hashimoto; Kenichi Terai; Isao Kakuhari; Takahisa Hachuda
Archive | 2004
Kenichi Terai; Kazutaka Abe; Isao Kakuhari; Yasuhito Watanabe; Gempo Ito
Archive | 2001
Akira Takahashi; Toshio Inoue; Tsuyoshi Yamashita; Hisashi Sano; Kenichi Terai; Hiroyuki Hashimoto; Isao Kakuhari; Yoshio Nakamura
Archive | 2001
Isao Kakuhari; Kenichi Terai; Hiroyuki Hashimoto
Archive | 2004
Kenichi Terai; Kazutaka Abe; Isao Kakuhari; Yasuhito Watanabe; Gempo Ito
Archive | 2003
Isao Kakuhari; Kenichi Terai; Ko Mizuno
Archive | 2001
Kenichi Terai; Hiroyuki Hashimoto; Isao Kakuhari
Archive | 1998
Isao Kakuhari; Kenichi Terai; Hiroyuki Hashimoto