Patents by Inventor Syunichi Imanishi

Syunichi Imanishi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Noise canceling method
    Patent number: 5410606
    Abstract: A noise-canceling method for simultaneously canceling a plurality of harmonic components of the engine rotational speed contained in engine noise. Reference signals are generated in correspondence with a plurality of harmonic components, and an adaptive signal processing is executed by using each reference signal, a composite-sound signal of the engine sound and a composite noise-canceling sound at a noise-canceling point, thereby generating a noise-canceling signal. The noise-canceling signal is input to a speaker. The reference signal corresponding to a harmonic component of a low level is multiplied by a constant K before it is input to the speaker so as to approximately equalize the levels of all the harmonic components at the noise-canceling point.
    Type: Grant
    Filed: July 13, 1993
    Date of Patent: April 25, 1995
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Kenji Imai, Tetsu Kanamori, Syunichi Imanishi, Hideki Sato, Makoto Namekawa, Masaichi Akiho, Tsuyoshi Yamashita, Kunio Miyauchi, Hisashi Sano, Akira Suto