PERCEPTION OF COMPLEX AUDITORY STIMULI BY THE DEAF

这项研究的长期目标是发现基本的心理声学 听力受损的特征将决定声学 增强功能以促进语音感知。从中度到深度 听力受损的年轻人将被研究他们的光谱使用 辅音识别的线索。带有光谱提示的辅音 不同频段的静态声学与动态声学 将对数据段进行测试。辅音将驻留在VCV令牌中 摘自流利的演讲。听众将被预选为 在使用光谱线索的能力上有所不同。听觉因素将是 测试以区分好的和不好的线索使用的听者。 辅音可听度估计，以及频率和 时间分辨率将根据光谱线索的使用情况进行分析。 声学退化程度不同的辅音将被测试 对于有好的光谱提示的听众-使用。降级将是 施加在辅音片段上的频率和时间变化 包含光谱线索。降低辅音的变化 感知将揭示最小的声学特性，使 听众的光谱线索--使用。这些声学特性将是 在辅音中夸张，为听力受损的听众测试 光谱提示--使用。这些夸张的言辞可能会为这类听众的使用提供便利 因此，提高了它们的辅音识别能力。

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.