PERCEPTION OF COMPLEX AUDITORY STIMULI BY THE DEAF

聋人对复杂听觉刺激的感知

• 批准号: 3215578
• 负责人: SALLY G REVOILE
• 金额: $ 17.24万
• 依托单位: GALLAUDET UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 1986
• 资助国家: 美国
• 起止时间: 1986-09-01 至 1995-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/3215578
• 关键词: auditory discrimination; auditory feedback; auditory stimulus; auditory threshold shift; clinical biomedical equipment; cues; deaf aid; deafness; hearing tests; human subject; perceptual maskings; psychoacoustics; sound frequency; speech; time perception; young adult human (21-34)

The long term goal of the research is to discover basic psychoacoustic characterizations of impaired hearing that will determine acoustic enhancements to facilitate speech perception. Moderate-to-profoundly hearing-impaired young adults will be studied for their use of spectral cues to consonant recognition. Consonants with spectral cues in different frequency regions and in static versus dynamic acoustic segments will be tested. The consonants will reside in VCV tokens extracted from fluent speech. The listeners will be preselected to differ in ability to use spectral cues. Auditory factors will be examined to differentiate listeners with good versus poor cue-use. Consonant audibility estimates, and some measures of frequency and temporal resolution will be analyzed in relation to spectral cue-use. Consonants with different degrees of acoustic degradation will be tested for listeners with good spectral cue-use. The degradations will be frequency and temporal alterations that are imposed on consonant segments containing the spectral cues. The alterations that reduce consonant perception will reveal the minimal acoustic properties that enabled the listeners' spectral cue-use. These acoustic properties will be exaggerated in consonants tested for hearing-impaired listeners with poor spectral cue-use. The exaggerations may facilitate such listeners' use of spectral cues and, thus, improve their consonant recognition.

研究的长期目标是发现基本的心理声学 听力受损的表征，将确定声学 增强以促进语音感知。 中度至重度 听力受损的年轻成年人将被研究他们使用的光谱 辅音识别的线索 有谱线索的辅音 不同的频率区域和静态与动态声学 将对部分进行测试。 辅音将驻留在VCV标记中 从流利的语言中提取出来。 听众将被预选， 使用光谱线索的能力不同。 听觉因素将是 检查，以区分听众与良好的线索与不良的使用。 辅音可听度估计，以及频率和 将分析与光谱线索使用相关的时间分辨率。 将测试声学退化程度不同的辅音 对于具有良好频谱线索使用的听众。 退化将是 频率和时间的变化，施加在辅音段 包含光谱线索。 减少辅音的变化 感知将揭示最小的声学特性，使 听众的频谱线索使用。 这些声学特性将是 在对听力受损的听众进行测试时， 光谱提示使用。 这种夸张可能会方便这些听众使用 从而提高他们的辅音识别能力。