Study of negative impulsive wave generator for reducing impulsive noise (improvement of wave strength)

Toshiaki Setoguchi, Kazuyasu Matsuo, Toshiyuki Aoki, Ryuichi Nakatomi, Fumiyasu Hidaka, Kenji Kaneko

Research output: Contribution to journalArticle


The compression wave discharged from the open end of a tube causes positive impulsive noise. Active noise cancellation, which is cancelling of noise by the addition of an inverse wave, is a useful technique for reducing impulsive noise. We present a design for a negative impulsive wave generator utilizing unsteady mass influx. The generator consists of a vacuum chamber and a movale valve. In order to increase the strength of the negative impulsive wave, the effect of value geometry on the impulsive wave has been clarified, and a suitable choice of design factors has been suggested.

Original languageEnglish
Pages (from-to)3317-3322
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B
Issue number601
Publication statusPublished - Jan 1 1996


All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Mechanical Engineering

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