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    • 64. 发明申请
    • METHODS FOR CORRECTING OTOACOUSTIC EMISSION MEASUREMENTS
    • 用于校正耳声发射测量的方法
    • WO2017189944A1
    • 2017-11-02
    • PCT/US2017/030020
    • 2017-04-28
    • MASSACHUSETTS EYE AND EAR INFIRMARY
    • CHARAZIAK, KarolinaSHERA, Christopher
    • A61B5/12A61B5/0484G01H15/00
    • A61B5/12A61B5/6817A61B5/7203A61B2560/0223G01H15/00
    • The methods disclosed herein enable calculating otoacoustic emission (OAE) pressure independent of the acoustic load imposed by the ear canal and the OAE probe measurement system, e.g., for hearing tests. The OAE pressure is calculated in a form of either the first outgoing wave at the eardrum, referred as emitted pressure level ( P EPL ), or as a Thvenin-equivalent OAE source pressure level ( P TPL ) at the eardrum, as derived from a simple tube model of an ear canal. In both methods the OAE sound pressure level ( P SPL ), ear canal reflectance ( R EC ), OAE probe source reflectance ( R S ), and one-way ear canal delay (τ) are measured at the entrance of the ear canal with the OAE probe. In contrast to P SPL , both methods result in an emission pressure that is not confounded by the effects of the residual ear canal space or the impedance of the OAE measurement system.
    • 本文所公开的方法能够独立于由耳道和OAE探针测量系统施加的声学负载来计算耳声发射(OAE)压力,例如用于听力测试。 OAE压力是以耳膜上的第一次出射波(称为发射压力水平(P EPL))或作为Thvenin等效OAE源的形式计算的 从耳道的简单管模型导出的耳膜处的压力水平(P TPL )。 在这两种方法中,OAE声压级(SPL ),耳道反射率(EC ),OAE 使用OAE探针在耳道入口处测量探头源反射率(R S)和单向耳道延迟(τ)。 与P SPL 不同,这两种方法都导致发射压力不受残余耳道空间的影响或OAE测量系统的阻抗的影响。 / p>