Development of a Computerized Sound Attenuation Measurement System of Hearing Protectors Based on Japanese Industrial Standard (JIS)

DOI Web Site Web Site 1 Citations
  • INOUE Jinro
    Bio-information Research Center, University of Occupational and Environmental Health
  • IDOTA Nozomi
    Department of Health Policy and Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health
  • TSUTSUI Takao
    Department of Health Policy and Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health
  • HORIE Seichi
    Department of Health Policy and Management, Institute of Industrial Ecological Sciences, University of Occupational and Environmental Health

Bibliographic Information

Other Title
  • JISに基づくコンピュータ化された防音保護具遮音性能試験装置の開発
  • JIS ニ モトヅク コンピュータカ サレタ ボウオン ホゴグシャオン セイノウ シケン ソウチ ノ カイハツ

Search this article

Description

Sound attenuation measurement of hearing protectors is done in accordance with JIS T 8161 in Japan. In the JIS T 8161 it is stated that more than three non-coherent sets which include a noise generator, one-third octave band-pass filter, amplifier, calibrated attenuator and signal interrupter are required. To realize this measurement system, various expenses and a large space are required. In our study, four channel test signals were generated by our programs, and fed to a digital/analog converter. Consequently, the hardware of a noise generator and one-third octave band-pass filter could be reduced. Moreover, a program, which automatically controlled sound pressure level by digitally controlled attenuators, was developed with the result that the sound attenuation measurement could be performed by operating the mouse. Furthermore, sound attenuation of the earplug was measured in accordance with JIS T 8161 to evaluate our system. The result showed that practical sound attenuation values were obtained by easy operation. It was considered that this system was effective in hardware reduction, and useful for sound attenuation measurement of hearing protectors.

Journal

  • Journal of UOEH

    Journal of UOEH 25 (3), 271-281, 2003

    The University of Occupational and Environmental Health, Japan

Citations (1)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top