The Journal of the Marine Acoustics Society of Japan
Online ISSN : 1881-6819
Print ISSN : 0916-5835
ISSN-L : 0916-5835
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Volume 25, Issue 2
Displaying 1-2 of 2 articles from this issue
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  • Effects of diving hood and face mask for underwater auditory sensitivity
    Shin'ya KUWAHARA, Kensei OIMATSU, Kazuoki KURAMOTO, Shizuma YAMAGUCHI
    1998 Volume 25 Issue 2 Pages 86-91
    Published: April 01, 1998
    Released on J-STAGE: March 02, 2011
    DOIhttps://doi.org/10.3135/jmasj.25.86
    JOURNAL FREE ACCESS
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    To fabricate an underwater information system using audible sound projected by underwater loudspeaker, it is important to estimate the effects of diving hood and face mask for underwater auditory sensitivity. Measuring the underwater sound pressure levels between inside and outside neoprene hoods, it is clear that the hood material becomes a more effective attenuator as frequency is incresed. The attenuations of the signal show a good agreement with threshold performance increases under the experimental condition touching only forehead to water. It appears from the another experiment, in high frequency region above 2 kHz, that the hearing sensitivity of divers is reduced when they wear a neoprene hood and a diving face mask. On the other hand, in low frequency region below 1 kHz, it can be noted that the hearing sensitivity in a case wearing the hood does not result in any functional change.
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  • Erratum
    1998 Volume 25 Issue 2 Pages 100
    Published: 1998
    Released on J-STAGE: March 02, 2011
    DOIhttps://doi.org/10.3135/jmasj.25.100
    JOURNAL FREE ACCESS
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