CAUSALITY CONSTRAINTS ON EAR-CANAL TESTS OF ACOUSTIC REFLECTION FUNCTION AND REFLECTANCE

声反射函数和反射率耳道测试的因果关系约束

基本信息

  • 批准号:
    10133285
  • 负责人:
  • 金额:
    $ 23.25万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
  • 财政年份:
    2020
  • 资助国家:
    美国
  • 起止时间:
    2020-12-01 至 2022-11-30
  • 项目状态:
    已结题

项目摘要

PROJECT SUMMARY/ABSTRACT This project develops and evaluates procedures to estimate the ear-canal sound field near the tympanic membrane (TM). The underlying framework of these procedures is to model the ear canal as an acoustic waveguide. Spatial variation in the cross-sectional area of the ear canal is described acoustically by quantifying forward and reverse sound waves traveling between a probe inserted into the ear canal and a location near the TM. Describing the sound field near the TM in terms of sound pressure and its reflected and transmitted components more accurately quantifies the acoustical high frequency (HF) input to the middle ear. Such a description improves HF calibration of the stimulus near the TM for physiological tests such as otoacoustic emission and auditory brainstem responses, and HF behavioral tests such as extended audiometry and tests of spatial processing of sound. The specification also improves the ability to describe forward and reverse otoacoustic emission responses at HFs, which non-invasively encode information on outer-hair cell function within the cochlea. The project outcomes will benefit acoustic diagnostic tests of middle-ear and cochlear function. The goals of Aim 1 are to: (i) implement and evaluate a causal, time-domain measurement at the probe tip of the acoustic reflection function (RF) of the ear, such that reflectance is the Fourier transform of the RF, (ii) use the RF to calculate area-distance functions of the ear canal between the probe tip and TM, and (iii) use RF and area data to estimate the sound field near the TM (i.e., to within 3.6 mm). Current frequency- domain tests to measure reflectance are not constrained to obey causality, which limits their accuracy in clinical applications, especially at frequencies above 8 kHz. Causality requires that sound cannot be reflected prior to its incidence. The RF of the ear is a key response for subsequent area-distance calculations within the ear canal. RF data will be acquired in Aim 1 experiments in tubing systems with varying areas, molds of ear canals and an artificial ear simulator (IEC711 coupler). Present approaches to describe the area-distance function in the ear canal largely use the Webster, or plane-wave, horn equation, which is of insufficient accuracy for the area variations in the ear canal. This project will measure area-distance functions using a novel spherical-wave horn model that controls for changes in the taper of the ear canal. These area-distance algorithms include a novel time-domain description of losses at the ear-canal walls. The goals of Aim 2 are to: (i) acquire RF data in groups of 5-year-old children and adults with normal hearing, (ii) calculate area-distance functions in their canal, (iii) use a digital scanner to measure the ear-canal geometry, (iv) compare acoustic and scanned measurements of the area-distance function, (v) estimate the sound field pressure, and transmission and reflection of sound, near the TM, and (vi) test for maturational differences in ear-canal and middle-ear function in children relative to adults. The approach makes maximal use of the acoustic data provided in a probe measurement within the ear canal.
项目总结/文摘

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Douglas H Keefe其他文献

Douglas H Keefe的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Douglas H Keefe', 18)}}的其他基金

CAUSALITY CONSTRAINTS ON EAR-CANAL TESTS OF ACOUSTIC REFLECTION FUNCTION AND REFLECTANCE
声反射函数和反射率耳道测试的因果关系约束
  • 批准号:
    10310525
  • 财政年份:
    2020
  • 资助金额:
    $ 23.25万
  • 项目类别:
OTOREFLECTANCE ASSESSMENT OF MIDDLE-EAR FUNCTIONING
中耳功能的耳反射评估
  • 批准号:
    7125938
  • 财政年份:
    2003
  • 资助金额:
    $ 23.25万
  • 项目类别:
OTOREFLECTANCE ASSESSMENT OF MIDDLE-EAR FUNCTIONING
中耳功能的耳反射评估
  • 批准号:
    6744273
  • 财政年份:
    2003
  • 资助金额:
    $ 23.25万
  • 项目类别:
OTOREFLECTANCE ASSESSMENT OF MIDDLE-EAR FUNCTIONING
中耳功能的耳反射评估
  • 批准号:
    7056571
  • 财政年份:
    2003
  • 资助金额:
    $ 23.25万
  • 项目类别:
ACOUSTIC RESPONSES OF COCHLEA AND MIDDLE EAR
耳蜗和中耳的声学响应
  • 批准号:
    2849034
  • 财政年份:
    1999
  • 资助金额:
    $ 23.25万
  • 项目类别:
ACOUSTIC RESPONSES OF COCHLEA AND MIDDLE EAR
耳蜗和中耳的声学响应
  • 批准号:
    6516187
  • 财政年份:
    1999
  • 资助金额:
    $ 23.25万
  • 项目类别:
ACOUSTIC RESPONSES OF COCHLEA AND MIDDLE EAR
耳蜗和中耳的声学响应
  • 批准号:
    6634486
  • 财政年份:
    1999
  • 资助金额:
    $ 23.25万
  • 项目类别:
ACOUSTIC RESPONSES OF COCHLEA AND MIDDLE EAR
耳蜗和中耳的声学响应
  • 批准号:
    6176908
  • 财政年份:
    1999
  • 资助金额:
    $ 23.25万
  • 项目类别:
ACOUSTIC RESPONSES OF THE HUMAN COCHLEA AND MIDDLE EAR
人类耳蜗和中耳的声学响应
  • 批准号:
    7174621
  • 财政年份:
    1999
  • 资助金额:
    $ 23.25万
  • 项目类别:
ACOUSTIC RESPONSES OF COCHLEA AND MIDDLE EAR
耳蜗和中耳的声学响应
  • 批准号:
    6379443
  • 财政年份:
    1999
  • 资助金额:
    $ 23.25万
  • 项目类别:

相似海外基金

The Language Environment in Fostering 5-Year-Old Children's Voluntary Involvements
培养5岁儿童自愿参与的语言环境
  • 批准号:
    22K13681
  • 财政年份:
    2022
  • 资助金额:
    $ 23.25万
  • 项目类别:
    Grant-in-Aid for Early-Career Scientists
The Study of Reading Picture Books In 5-Year-Old Class and the Support Process of the Teachers
五岁班绘本阅读研究及教师支持过程
  • 批准号:
    19K14156
  • 财政年份:
    2019
  • 资助金额:
    $ 23.25万
  • 项目类别:
    Grant-in-Aid for Early-Career Scientists
Improving motor skills in 3-5 year old children with Autism Spectrum Disorder: Effects on the family unit.
提高患有自闭症谱系障碍的 3-5 岁儿童的运动技能:对家庭单位的影响。
  • 批准号:
    386469
  • 财政年份:
    2017
  • 资助金额:
    $ 23.25万
  • 项目类别:
    Studentship Programs
Epidemiological study and Creating new diagnostic methods for Neurodevelopmental disorders in 5-year-old children
5岁儿童神经发育障碍流行病学研究及诊断新方法
  • 批准号:
    16K10239
  • 财政年份:
    2016
  • 资助金额:
    $ 23.25万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Differences in motor milestone attainment in 4- and 5-year old children at risk for Developmental Coordination Disorder
有发育协调障碍风险的 4 岁和 5 岁儿童在运动里程碑方面的差异
  • 批准号:
    324425
  • 财政年份:
    2015
  • 资助金额:
    $ 23.25万
  • 项目类别:
Prevalence and social determinants of developmental outcomes among 5-year-old children with health disorders: A Pan-Canadian study
5 岁儿童健康障碍的患病率和发育结果的社会决定因素:一项泛加拿大研究
  • 批准号:
    322111
  • 财政年份:
    2015
  • 资助金额:
    $ 23.25万
  • 项目类别:
    Operating Grants
Fornative Expressive Behavior in Children's (4 years old and 5 year-old) Artistic Play Activities
儿童(4岁和5岁)艺术游戏活动中的本能表达行为
  • 批准号:
    26780506
  • 财政年份:
    2014
  • 资助金额:
    $ 23.25万
  • 项目类别:
    Grant-in-Aid for Young Scientists (B)
The development which is a shift support program to a 1st grader of elementary school from 5-year old children who prevents "a 1st grade of elementary school, problem"
作为防止"小学一年级、问题"的5岁儿童到小学一年级学生的轮班支援计划的展开
  • 批准号:
    25381292
  • 财政年份:
    2013
  • 资助金额:
    $ 23.25万
  • 项目类别:
    Grant-in-Aid for Scientific Research (C)
Development of behavioural measures of sentence comprehension in 2 to 5 year old children
2至5岁儿童句子理解行为测量的发展
  • 批准号:
    449402-2013
  • 财政年份:
    2013
  • 资助金额:
    $ 23.25万
  • 项目类别:
    University Undergraduate Student Research Awards
Technology development and neuroimaging for 5 year old children with HIV infectio
5 岁 HIV 感染儿童的技术开发和神经影像学
  • 批准号:
    8133656
  • 财政年份:
    2011
  • 资助金额:
    $ 23.25万
  • 项目类别:
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了