Recordings of the aircraft ambiance from ten different types of aircraft were used in conjunction with four distinct speech interference tests as stimuli to determine the effects of interior aircraft background levels and speech intelligibility on perceived annoyance in 36 subjects. Both speech intelligibility and background level significantly affected judged annoyance. However, the interaction between the two variables showed that above an 85 db background level the speech intelligibility results had a minimal effect on annoyance ratings. Below this level, people rated the background as less annoying if there was adequate speech intelligibility.


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    Title :

    Effects of Interior Aircraft Noise on Speech Intelligibility and Annoyance


    Contributors:

    Publication date :

    1977


    Size :

    67 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English







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