SNR-loss in hearing impaired ears

听力受损耳朵的信噪比损失

• 批准号: 7530385
• 负责人: Jont Brandon Allen
• 金额: $ 21.48万
• 依托单位: UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN
• 依托单位国家: 美国
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-08 至 2010-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7530385
• 关键词: Abbreviations; Accounting; Acoustic Nerve; Address; Age; Basic Science; Cochlea; Cognitive; Communication; Condition; Confusion; Cueing for speech; Devices; Diagnosis; Diagnostic; Discrimination; Ear; Environment; Frequencies; Generic Drugs; Goals; Growth; Hair Cells; Hearing; Hearing Aids; Hearing problem; Human; Impaired cognition; Individual; Inner Hair Cells; Intuition; Investigation; Joints; Knowledge; Loudness; Masks; Measures; Methods; Modeling; Nature; Nerve Endings; Noise; Numbers; Outer Hair Cells; Pathology; Persons; Play; Problem Solving; Rate; Research; Role; Score; Sensory; Signal Transduction; Source; Speech; Speech Acoustics; Speech Perception; Speech Sound; Testing; base; cell injury; hearing impairment; improved; indexing; insight; novel; sound

DESCRIPTION (provided by applicant): The focus of this research is to model how people decode speech sounds. The main application of this knowledge is to solve the problem of "signal-to-noise ratio loss," or SNR-Loss, a condition of the hearing impaired where a person is hypersensitive to noise. Under conditions of optimum frequency dependent amplification a person with SNR-Loss requires a better SNR to understand speech as a normal hearing person, for the same score. Existing methods for diagnosing SNR-Loss do not provide insight into the nature of the problem. What we wish to develop is a measure of SNR-Loss that identifies which sounds are being lost, and at what SNR. In this research we have demonstrated that people with hearing loss have problems hearing only a small number of sounds, and that these confusable sounds differ from ear to ear, depending on the particular hearing loss. Out of the 16 ears we have tested, we have not found any two ears that are the same. The hearing impaired (HI) have more trouble hearing speech in noise than normal hearing people. We would like to provide a scientific basis for why this happens, by measuring the most confusable sounds that the impaired ear find most difficult. We have discovered that only a few sounds are confused, and they are different for different ears. We shall answer the questions: "Specifically which perceptual consonant features are not audible to each hearing impaired listener?", "How does this audibility and confusability change as a function of the background noise and amplification?"

描述（由申请人提供）：这项研究的重点是建模人们如何解码语音。该知识的主要应用是解决“信噪比损失”或SNR损失的问题，这是一个人对噪声过敏的听力障碍的状况。在最佳频率依赖性放大条件下，患有SNR损失的人需要更好的SNR才能将语音理解为正常的听力人，以相同的分数。现有的诊断SNR损失的方法不能洞悉问题的性质。我们希望开发的是SNR失误的量度，它可以识别出丢失的声音，以及在什么SNR上。在这项研究中，我们已经证明，听力损失的人只有少量的声音听不到听力的问题，并且这些令人困惑的声音因耳朵而异，具体取决于特定的听力损失。在我们已经测试过的16只耳朵中，我们还没有发现任何两个耳朵相同的耳朵。听力障碍（HI）在噪音中听力言语的麻烦比正常的听力人数更多。我们想通过测量受损的耳朵最困难的最混乱的声音来为为什么发生这种情况提供科学依据。我们发现只有几种声音很困惑，并且不同耳朵的声音不同。我们将回答以下问题：“具体来说，每个听力受损的听众都无法听到哪些感知辅音功能？”，“这种可听性和混淆性如何随背景噪声和放大的函数而变化？”