MODELS OF HEARING LOSS

听力损失模型

• 批准号: 3216728
• 负责人: CHRISTOPHER W TURNER
• 金额: $ 11.64万
• 依托单位: SYRACUSE UNIVERSITY AT SYRACUSE
• 依托单位国家: 美国
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-05-01 至 1994-04-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3216728
• 关键词: auditory discrimination; auditory threshold; cognition; cues; disease /disorder model; human subject; model design /development; psychoacoustics; sensorineural hearing loss; sound; speech

A young investigator proposes a five-year research plan to continue studies in the perception of speech and complex sounds by persons with sensorineural hearing loss. A general model of sensorineural hearing loss is described that is based upon deficits in the audibility of speech cues and deficits in the spectral resolution of those cues (Turner and Henn, 1988). The model provides an "internal spectral representation" of a speech segment for each subject that describes the audibility and perceptual strength of spectral cues. This internal representation is derived by calculating the outputs of a bank of auditory filters; the characteristics of these filters are determined individually for each subject. The internal representations are then used to predict the confusions that subjects make on a speech recognition task, testing the hypothesis that the stronger the resemblance between two internal spectra in a given subject. The more often those two speech sounds will be confused by that subject. Several measures of auditory filtering will be used to refine the model, as well as several schemes, based upon speech perception research, for quantifying the "similarity" of speech spectra. The goal of speech processing for the hearing impaired that follows from such a hypothesis is to operate upon the physical speech signal in such a manner as to produce an internal representation in the ear that quantitatively provides speech cues most like that produced in the normal ear. Several additional experiments are proposed to test the potential applicability of "multi- channel"models of complex sound perception (profile-analysis); both behavioral and physiological experiments are described.

一位年轻的研究人员提出了一个五年研究计划来继续 研究人对言语和复杂声音的感知 患有感音神经性听力损失。 感音神经的一般模型 听力损失被描述为基于听觉缺陷 语音提示的可听性和频谱分辨率的缺陷 这些线索（Turner 和 Henn，1988）。 该模型提供了一个 每个语音片段的“内部频谱表示” 描述听觉和感知强度的主题 光谱线索。 这个内部表示是由 计算一组听觉滤波器的输出；这 这些滤波器的特性是单独确定的 每个科目。 然后使用内部表示 预测受试者对语音识别的困惑 任务，检验相似性越强的假设 给定对象的两个内部光谱之间。越频繁 这两个语音会被该主题混淆。 一些 听觉过滤措施将用于完善模型， 以及基于语音感知研究的几个方案， 用于量化语音频谱的“相似性”。 目标是 听力受损者的语音处理 一个假设是对物理语音信号进行操作 一种产生内部表征的方式 最能定量提供语音提示的耳朵 产生于正常耳朵。 几个额外的实验是 提议测试“多 复杂声音感知的通道”模型（轮廓分析）；两者 描述了行为和生理实验。