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    • 7. 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>
    • 8. 发明申请
    • QUANTITATIVE IN-SITU TEXTURE MEASUREMENT APPARATUS AND METHOD
    • 定量原位纹理测量装置和方法
    • WO2017152154A1
    • 2017-09-08
    • PCT/US2017/020833
    • 2017-03-04
    • FRITO-LAY NORTH AMERICA, INC.
    • BAI, OuBOURG, Wilfred, MarcellienMICHEL-SANCHEZ, EnriqueALI MIRZA, Shahmeer
    • A23L19/00G01H15/00G01N29/04G01N29/14G01N29/44G01N33/10
    • A measurement apparatus and method for in-situ quantitative texture measurement of a food snack. The apparatus includes an acoustic capturing device and a data processing unit. The physical interaction in the mouth with saliva, when a human being eats/drinks a food snack, sends pressure waves that propagate through the ear bone and produce an acoustic signal. The acoustic capturing device records and forwards the signal to a data processing unit. The data processing unit further comprises a digital signal processing module that smoothens, transforms and filters the received acoustic signal. A statistical processing module further filters the acoustic signal from the data processing unit and generates a quantitative acoustic model for texture attributes such as hardness and fracturability. The quantitative model is correlated with a qualitative texture measurement from a descriptive expert panel. Another method includes a food snack fingerprinting using an in-situ quantitative food property measurement.
    • 用于食物零食的原位定量组织测量的测量设备和方法。 该设备包括声音捕捉设备和数据处理单元。 口中与唾液的物理相互作用,当人类食用或饮用食物小吃时,会传播通过耳骨传播的压力波并产生声音信号。 声音捕捉设备将信号记录并转发到数据处理单元。 数据处理单元还包括数字信号处理模块,其对所接收的声学信号进行平滑,变换和滤波。 统计处理模块进一步过滤来自数据处理单元的声学信号,并产生纹理属性(例如硬度和易碎性)的定量声学模型。 定量模型与来自描述性专家组的定性纹理测量相关。 另一种方法包括使用原位定量食品特性测量的食物零食指纹。