This article describes an objective methodology for measuring the noise attenuation of earmuff hearing protectors using as a reference the method known as microphone-in-real-ear (MIRE). The methodology implements the Insertion Loss (IL) paradigm, in which IL is measured using miniature microphones, specially designed to comply with ANSI and ISO standards for the MIRE technique. The results for a commercial hearing protector are compared with the subjective method known as real-ear-attenuation-at-threshold (REAT). Correction factors are included in the methodology to account for external effects such as physiological noise and bone conduction. The objective method predicted well the real protection of the earmuff and the proposed methodology showed lower standard deviation values than the REAT method.


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    Titel :

    An Objective Methodology for Measuring Earmuff Hearing Protector Noise Attenuation


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:

    Kongress:

    SAE Brasil International Noise and Vibration Congress ; 2010



    Erscheinungsdatum :

    17.10.2010




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch


    Schlagwörter :


    An Objective Methodology for Measuring Earmuff Hearing Protector Noise Attenuation

    de Almeida Agurto, D. / Gerges, S.N.Y. / Arenas, J.P. et al. | British Library Conference Proceedings | 2008




    An Insert Hearing Protector with Voice Communications Capability

    Mozo, B. T. / Gordon, E. / Murphy, B. A. et al. | British Library Conference Proceedings | 1999


    Objective Evaluation System for Noise Reduction Performance of Hearing Aids

    Zhang, Li / Chen, Xiaomei / Zhong, Bo et al. | British Library Conference Proceedings | 2015