Auditory Processing of Complex Sounds - Sensitivity to Chirps
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 67
- 试验地点
- 1
- 主要终点
- F2 Discrimination Threshold
研究概览
简要总结
The purpose of this study is to better understand the sensitivity of listeners to the fast changes in frequency or amplitude of sounds that occur in speech. The investigators are studying ways to manipulate these aspects of sounds in an effort to make speech sounds more clear.
详细描述
The investigators will test listeners with normal hearing or with mild or moderate hearing loss. Tests will first focus on sensitivity to changes in fast changes in amplitude (loudness) or frequency (pitch) in sounds. Then the investigators will test the intelligibility of synthetic vowels and syllables in which these "chirps" are manipulated. Finally, the investigators will test intelligibility of words in noise while manipulating sounds in an effort to improve clarity.
研究设计
- 研究类型
- Interventional
- 分配方式
- Non Randomized
- 干预模型
- Parallel
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 80 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Normal hearing, mild or moderate symmetric sensorineural hearing loss.
排除标准
- •Asymmetric hearing thresholds (more than 15 decibels (dB) threshold difference between the two ears at any frequency up to 4 kHz).
- •Severe hearing loss (greater than 60 dB hearing thresholds at any frequency up to 4 kHz).
研究组 & 干预措施
Normal Hearing
Signal processing to improve intelligibility
干预措施: Signal processing to improve intelligibility (Other)
Mild hearing loss
Signal processing to improve intelligibility
干预措施: Signal processing to improve intelligibility (Other)
Moderate hearing loss
Signal processing to improve intelligibility
干预措施: Signal processing to improve intelligibility (Other)
结局指标
主要结局
F2 Discrimination Threshold
时间窗: 6 month
Discrimination thresholds in % frequency for F2, the higher-frequency peak in synthetic vowel stimuli.
F1 Discrimination Threshold
时间窗: 6 months
Discrimination threshold for changes in F1, the low-frequency formant (spectral peak) in the synthetic vowel sounds.
Pure-tone Average Thresholds
时间窗: 6 months
Hearing thresholds, average across test frequencies from 250 to 4000 Hz and averaged across the two ears.
次要结局
未报告次要终点
研究者
Laurel Carney
Professor
University of Rochester