HEARING LOSS AND THE PERCEPTION OF COMPLEX SOUND

描述：(改编自申请人的摘要)一所小学 内耳的操作是将声刺激分成两部分 不同频带的活动，通常称为耳蜗滤器。一段历史 针对这些滤光片的测量的实验结果表明 与受试者相比，有耳蜗病患的听者的听力障碍范围更广 在听力正常的情况下，解释时的一个重要考虑因素减少了 在噪音中的语言清晰度通常被发现有这样的损害。 从历史上看，对耳蜗滤器的研究主要集中在其 幅值谱，即它们的频率响应，但目前 研究项目加入了对相位响应的尖端研究 过滤器的一部分。这些数据将具有双重功能。首先，他们有 对我们对听觉功能的基本了解有相当大的价值； 其次，在提供有关动态处理 无论是渠道内部还是跨渠道的组件，它们都解决了相关问题 列表者在强度和强度上利用信息的能力 语音的频率轮廓。定制听证会的传统方式 对个人的援助是为了匹配援助的获得特征 从病人那里获取数据的阈值。然而，随着 用于修改处理算法的强大数字技术 新的艾滋病，将有可能利用知识的优势 患者耳蜗滤器的相位特性对提高其功能的作用 有效的信噪比，从而提高了信号的分辨率 日常听力中的语音信号。考虑到这一点， 关于正常和异常耳蜗期效应的实验将会问 听觉通道内的时间处理如何增强光谱 对比度和对变化的敏感性。听力正常，听力受损 听者将使用心理物理方法和测试进行测试 声反射，一种在听力学中常用的测量工具 敏感度。

DESCRIPTION: (Adapted From The Applicant's Abstract) A primary operation of the inner ear is the division of acoustic stimuli into the activities of separate bands, often called cochlear filters. A history of experimentation directed at measurement of these filters has shown them to be wider in listeners with cochlear impairments than in subjects with normal hearing, an important consideration in explaining diminished speech intelligibility in noise generally found with such impairment. Historically, studies of cochlear filter have concentrated on their amplitude spectra, i.e., their frequency responses, but the present program of research has joined cutting edge research on phase responses of the filters. These data will have a dual function. First, they have considerable value for our basic understanding of auditory function; secondly, in providing information about the dynamic processing of components both within and across channels, they address issues related to the lister's ability to utilize information in the intensity and frequency contours of speech. The traditional way to tailor a hearing aid for the individual was to match the gain characteristics of the aid to threshold data from the patient. However, with the advent of powerful digital techniques for modifying the processing algorithms for new aids, it will be possible to take advantage of knowledge of the phase characteristics of cochlear filters in the patient to increase the effective signal-to-noise ratios and hence the discriminability of speech signals in everyday listening. With this in mind, the experiments on phase effects in normal and abnormal cochleas will ask how temporal processing within the auditory channels enhances spectral contrast and sensitivity to change. Both normal hearing and impaired listeners will be tested using psychophysical methods as well as tests of the acoustic reflex, a tool commonly used in audiology to measure sensitivity.