A Soundproof Pressure Chamber

Masaaki Kitahara Department of Otolaryngology, Shiga University of Medical Science, Seta, Otsu, 520-21, Japan

Akira Kodama Department of Otolaryngology, Shiga University of Medical Science, Seta, Otsu, 520-21, Japan

Hiroshi Ozawa Department of Otolaryngology, Shiga University of Medical Science, Seta, Otsu, 520-21, Japan

Shuzo Inoue Department of Otolaryngology, Shiga University of Medical Science, Seta, Otsu, 520-21, Japan

Abstract

For neurotological research we designed a soundproof pressure chamber in which pressure can be adjusted ± 1000 mmH₂O at the rate of less than 100 mmH₂O per second. Noise in the chamber can be maintained under 30-35 dB while pressure is kept at a given level.

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A Soundproof Pressure Chamber

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A Soundproof Pressure Chamber

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