Speech intensity was adjusted to the preferred listening level by 65 flyers in the presence of 9 aircraft noise conditions and in quiet. The noises represented highest, lowest, and average overall levels at the pilot position in jet, propeller, and rotary-wing type aircraft. Twelve listeners also performed with dry cotton in the ear canals and another 12 with V-51R earplugs in place. Average preferred levels ranged from 79.5 to 95 dB SPL (without ear protectors) for the 9 noise conditions. Average preferred intensity in the quiet condition was 75.5 dB SPL. (Author)


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    Titel :

    Listening Levels Preferred by Flying Personnel


    Beteiligte:
    H. C. Sutherland (Autor:in) / D. C. Gasaway (Autor:in)

    Erscheinungsdatum :

    1971


    Format / Umfang :

    16 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




    Eye Opacities in Flying Personnel

    B. C. Martin / T. J. Tredici / J. F. Culver | NTIS | 1968