FACTORS AFFECTING TRANSITION USE BY THE HARD OF HEARING

影响重听者使用共振峰的因素 我们将通过三个实验来研究语音的转换。 听众的选择将基于：1)听力损失：(A)轻度至- 中度或(B)中度至重度，2)测听配置：(A)平坦 或(B)倾斜，以及3)听觉体验的量：(A)广泛的，或 (B)根据听力损失开始年龄的定义，有限的年限 放大使用，以及家庭/学校的交流模式。 这三个实验将使用不同的方法来研究 HOH听众使用的共振峰转换。它们是： 1)调查受试者使用共振峰转换进行滑行的情况 浊止辅音识别作为听力损失的函数 听觉体验。口语刺激将被修改，以便共振峰 过渡是辅音唯一可用的声学提示 身份证明。转换可听度将根据以下条件确定 每个过渡起始和偏移的阈值测量 频率。将开发可听度度量并将其应用于 描述过渡音质对过渡使用的影响。这个 共振峰转换的使用与听者共振峰转换的关系 听觉体验也将被测试。 2)听者的频率/时间辨别能力比较 带有过渡的类过渡刺激用于辅音识别。 过渡类刺激将模拟过渡特性 在滑行/停止识别刺激中发现。两国之间的关系 将描述过渡歧视和过渡使用。 3)HOH听者对共振峰知觉权重的调查 与其他声学提示相比的过渡到停止/滑行对比度。 将开发出不同的合成和自然语音刺激 沿着两个声学连续体(共振峰转换和幅度起始)。 听觉两种声学提示的知觉重要性分析 经验，听力损失的程度将完成。 在所有实验中，将使用听力阈值正常的听者 作为对照。

Factors affecting hard-of-hearing (HOH) listeners' use of formant transitions in speech will be investigated in three experiments. Listeners will be selected on the basis of: 1) hearing loss: (a) mild-to- moderate or (b) moderate-to-severe, 2) audiometric configuration: (a) flat or (b) sloping, and 3) amount of auditory experience: (a) extensive, or (b) limited, as define by age of hearing loss onset, years of amplification use, and home/school mode of communication. The three experiments will use different approaches for the study of formant transition use by HOH listeners. These are: 1) investigation of listeners' use of formant transitions for glide and voiced stop consonant identification as a function of hearing loss and auditory experience. Spoken stimuli will be modified so that formant transitions are the only available acoustic cues for consonant identification. Transition audibility will be determined based on threshold measurements for each of the transition onset and offset frequencies. An audibility metric will be developed and applied to describe the effects of transition audibility on transition use. The relationships between use of formant transitions and the listeners' auditory experience will also be examined. 2) comparison of listeners' frequency/temporal discrimination for transition-like stimuli with transition use for consonant identification. The transition-like stimuli will simulate the transition characteristics found in the glide/stop identification stimuli. Relationships between transition discrimination and transition use will be described. 3) investigation of HOH listeners' perceptual weighting of formant transitions compared to other acoustic cues to the stop/glide contrast. Both synthesized and natural speech stimuli will be developed that vary along two acoustic continua (formant transition and amplitude onset). Analysis of the perceptual importance of the two acoustic cues, auditory experience, and degree of hearing loss will be completed. In all experiments, listeners with normal hearing thresholds will be used as controls.