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    • 2. 发明授权
    • Hearing protection process and device
    • 听力保护过程和装置
    • US08607921B2
    • 2013-12-17
    • US13140309
    • 2009-12-16
    • Ali BerkerSharon R GarberRichard W. GregerMarie Aloshyna ep LesuffleurSmarajit Mitra
    • Ali BerkerSharon R GarberRichard W. GregerMarie Aloshyna ep LesuffleurSmarajit Mitra
    • H04R25/00
    • G10K11/165A61F11/08A61F11/14
    • A hearing protection process comprises (a) providing at least one hearing protection device comprising at least one sound barrier comprising at least one substantially periodic array of structures disposed in a first medium having a first density, the structures being made of a second medium having a second density different from the first density, wherein one of the first and second media is a viscoelastic medium having a speed of propagation of longitudinal sound wave and a speed of propagation of transverse sound wave, the speed of propagation of longitudinal sound wave being at least about 30 times the speed of propagation of transverse sound wave, and wherein the other of the first and second media is a viscoelastic or elastic medium; and (b) interposing the hearing protection device between an acoustic source and an acoustic receiver in the form of a human ear.
    • 听力保护过程包括(a)提供至少一个听力保护装置,其包括至少一个声屏障,其包括设置在具有第一密度的第一介质中的结构的至少一个基本上周期性的阵列,所述结构由具有第一介质的第二介质制成, 第二密度不同于第一密度,其中第一和第二介质中的一个是具有纵向声波的传播速度和横向声波的传播速度的粘弹性介质,纵向声波的传播速度至少为 是横向声波的传播速度的约30倍,其中第一和第二介质中的另一个是粘弹性或弹性介质; 和(b)将听觉保护装置插入在声源和声耳形式的声音接收器之间。