频谱退化和载体句子增加了与年龄相关的时间处理缺陷,以一种特定的方式
Zilong Xie1, Casey R Gaskins2, Anna R Tinnemore2,3
1School of Communication Science and Disorders, Florida State University, Tallahassee, Florida 32306, USA.
The Journal of the Acoustical Society of America
|June 27, 2024
概括
老龄化会降低对语音时间线索的敏感性,特别是在句子中和有退化的音频. 这影响了老年人,特别是耳植入物使用者,在日常听力环境中.
科学领域:
- 听觉神经科学 听觉神经科学
- 语音感知 语音感知
- 精神声学是一种精神声学.
背景情况:
- 随着年龄的增长,对时间语音线索的敏感性下降.
- 这种下降在非信息载体句子或光谱退化时更为明显,模拟耳植入物 (CI) 处理.
- 了解这些与年龄相关的变化对于提高听觉器械疗效至关重要.
研究的目的:
- 调查年龄,载体句子和语音时间线索处理上的光谱退化之间的相互作用.
- 确定这些因素如何影响年轻人和老年人的语音分类.
- 为了确定特定的时间线索最容易受到与年龄相关的衰退.
主要方法:
- 使用语音发声时间 (Buy/Pie) 和无声间隔 (Dish/Ditch) 的语音分类任务持续.
- 参与者:年轻人和老年人听力正常.
- 条件:孤立的单词与载体句子;未处理的与光谱降解的 (2,4,8通道正弦波声编码).
主要成果:
- 与年轻人相比,老年人对两个时间线索的敏感性降低了.
- 对于Buy/Pie对比,最大的年龄影响发生在载体句子中的未处理单词中.
- 光谱降解加剧了Dish/Ditch对比的年龄影响,而载体句子的影响较小.
结论:
- 某些语音时间线索在嵌入句子时,特别容易受到与年龄相关的衰退的影响.
- 这些发现凸显了老年人,包括耳植入物使用者在复杂的听力环境中的挑战.
- 与年龄相关的处理困难受时间线索类型和声学环境的影响.
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