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Hearing Tests for Selection of Sonar Operators

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Persons who have been working as sonar operators during military service were subjected to various hearing tests. The purpose was to find a suitable procedure to select subjects best suited for work as sonar operators. Relations were sought between the results of these tests and judgements of their performance as operators in general or as operators in wartime specifically. Statistical analyses, using linear correlations as well as non-parametric tests were accomplished. Several statistically significant relations were established, most of them related to the active compressive non-linearity of the inner ear. Otoacoustic emissions, and measurements of how well the ear can follow slow intensity modulations, the Psycho acoustical Modulation Transfer Function (PMTF) show great promise for selection of individuals for sonar work. Among the tested persons one PMTF-measurement could differentiate between the six best and the six worse persons working with passive sonar systems. However, more research is needed to confirm the findings. It is also likely that more than one hearing test is required to obtain a reliable selection procedure. Therefore more test results are needed before a test procedure is ready to be used regularly.
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Document Type: Research Article

Publication date: 1999-11-01

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  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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