Low-Frequency Noise Countermeasure in a Factory

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  • Aoki Masahiko
    Acoustic Solution Division, Nihon Onkyo Engineering Co., Ltd

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Other Title
  • 騒音・低周波音対策
  • 騒音・低周波音対策 : 耳で対策効果を実感する
  • ソウオン ・ テイシュウハオン タイサク : ミミ デ タイサク コウカ オ ジッカン スル
  • ─耳で対策効果を実感する─
  • ―Listen and Feel How We Can Resolve the Noise Problem―

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Abstract

<p>When the noise exceeds the regulation standard at the site boundary, the effect of the noise countermeasure is determined by the composite value of the countermeasured noise source and other noise sources that have not taken measures.</p><p>The method of surrounding the noise with the soundproof box is most effective, and the method of installing the silencer and the soundproof hood at the air supply/exhaust port is also relatively effective.</p><p>Measures on the propagation path of noise include installation of sound absorbing materials and sound insulating walls, but in many cases, it is not possible to obtain the effect as much as measures on the sound source side.</p><p>When there are complaints from neighboring people, noise of frequencies close to low frequency sounds or low frequency sounds tends to be problematic indoors.</p><p>The reason is that, in a detached house or the like, in general, the noise in the high frequency range is comparatively attenuated in the room compared to the outdoors, whereas the low frequency sound is difficult to attenuate.</p><p>We have developed our own “measuring equipment to visualize noise sources”, we confirmed in a short time which noise source influence the position of workers, and the effect of the measure is confirmed by simulation Are considering.</p>

Journal

  • JAPAN TAPPI JOURNAL

    JAPAN TAPPI JOURNAL 72 (12), 1365-1369, 2018

    JAPAN TECHNICAL ASSOCIATION OF THE PULP AND PAPER INDUSTRY

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