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pp.417-423
Published Date 1961/5/20
DOI https://doi.org/10.11477/mf.1492202669

In response to a new and modern demandfor sound-proof room in conducting hearing test a two-room set up is contructed. It is composed of a preparatory room and the te-sting-room proper interposed by sound proof rubber material and built in a floating stru-cture ; the walls of the rooms are provided with high degree sound-absorbing material.Care is taken to eliminate all sounds from the ventilating vent which provides a com-plete air-conditioning of the rooms.


Copyright © 1961, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 印刷版ISSN 0386-9679 医学書院

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