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    • 5. 发明授权
    • Audiometric method and apparatus for testing the effectiveness of
hearing protective devices
    • 用于测试听力保护装置有效性的听力测量方法和装置
    • US3968334A
    • 1976-07-06
    • US513604
    • 1974-10-10
    • Miguel Padilla
    • Miguel Padilla
    • A61B5/12H04R29/00
    • A61B5/12
    • A novel method and apparatus is disclosed for audiometrically testing the effectiveness and fitting of insert-type hearing protective devices whereby each ear is enclosed in a separate and portable audiometric enclosure having a telephonic earphone arrangement, the interior of each enclosure being freely spaced from the respective pinna of the ear to avoid any physical contact therebetween that may otherwise distort the ear canal supporting the protective device to be tested. Predetermined audiometric signals may be transmitted to each ear separately, both with and without the protective device, to obtain the difference of hearing thresholds and thereby determine separately, if needed, the fitting of each protective device, and its "real ear attenuation".
    • 公开了一种新颖的方法和装置,用于对插入式听力保护装置的有效性和装配进行听力测试,其中每个耳朵被封闭在具有电话耳机装置的单独的便携式听觉外壳中,每个外壳的内部与相应的 耳朵的耳廓以避免其间的任何物理接触,否则可能使支撑待测试的保护装置的耳道变形。 可以将预定的听力信号分别传送到每个耳朵,无论是否有保护装置,以获得听力阈值的差异,从而如果需要,分别确定每个保护装置的装配以及其“真正的耳朵衰减”。