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Restoration of spectral resolution with hearing-aid amplification

通过助听器放大恢复光谱分辨率

基本信息

批准号：
10065503
负责人：
Marc A. Brennan
金额：
$ 14.97万
依托单位：
UNIVERSITY OF NEBRASKA LINCOLN
依托单位国家：
美国
项目类别：
财政年份：
2018
资助国家：
美国
起止时间：
2018-12-01 至 2023-11-30
项目状态：
已结题

项目摘要

PROJECT SUMMARY/ABSTRACT Adults with hearing loss are more vulnerable to interference from background noise than adults with normal hearing. Despite the fact that the ability to extract speech information imbedded in background noise requires decoding differences in level across frequency (spectral information), few studies have addressed the extent to which we can provide spectral information to listeners with hearing loss. This fundamental gap in our knowledge prevents us from effectively addressing the systemic effects of hearing loss on communication, income, and ability to socialize with others. This work is a new application of established methods of characterizing spectral resolution to that of the most common device for rehabilitation of hearing loss—hearing-aid amplification. The proposed experiments will examine the degree to which access to spectral information can be restored to adults with hearing loss and the feasibility of utilizing this information to decrease interference from background noise. Aim 1 will delineate the impact of hearing-aid amplification on spectral decoding. Technology options that must be set by the clinician or hearing-aid manufacturer will be examined, including the frequency-specific gain, compressor speed, and number of compression channels. The proposed experiments will test the hypothesis that restoration of the lost dynamic range of hearing can support the encoding of spectral information. It is also hypothesized that the combination of technology options that best restore access to spectral information will differ across individuals and that these differences across individuals can be partially accounted for by an estimate of outer hair cell function. Aim 2 will determine the extent to which restoring access to spectral information supports speech recognition in background noise, under the guiding hypothesis that improving spectral resolution increases speech understanding. If it can be demonstrated that measures of spectral resolution with the provision of amplification are useful at delineating those who stand to benefit from different technology options, the knowledge gained could then be applied to the clinic to allow for clinicians to more successfully choose among different rehabilitation options.

项目概要/摘要听力损失的成年人比听力正常的成年人更容易受到背景噪音的干扰听力。尽管事实上提取嵌入在背景噪声中的语音信息的能力需要解码跨频率水平的差异（频谱信息），很少有研究涉及到程度我们可以为有听力损失的听众提供光谱信息。我们知识中的这一根本差距阻碍我们有效解决听力损失对沟通、收入和生活的系统性影响与他人交往的能力。这项工作是已建立的光谱表征方法的新应用解决方案是最常见的听力损失康复设备——助听器扩音器。这拟议的实验将检查成年人恢复光谱信息的程度听力损失以及利用此信息减少背景噪音干扰的可行性。目标 1 将描述助听器放大对频谱解码的影响。必须的技术选项由临床医生或助听器制造商设置的内容将受到检查，包括特定频率的增益，压缩机速度和压缩通道数量。所提出的实验将检验假设恢复失去的听力动态范围可以支持频谱信息的编码。这也是假设能够最好地恢复对光谱信息的访问的技术选项的组合将个体之间存在差异，并且个体之间的这些差异可以部分归因于估计外毛细胞功能。目标 2 将确定恢复频谱访问的程度在改进的指导假设下，信息支持背景噪声中的语音识别频谱分辨率可提高语音理解能力。如果可以证明光谱测量提供放大的决议有助于界定哪些人将从不同的方案中受益技术选项，获得的知识可以应用到诊所，使临床医生能够获得更多成功地选择不同的康复方案。