音调歧视与耳植入物使用者语音和语音流的分离之间的关系
Andres Camarena1, Matthew Ardis1, Takako Fujioka2
1Auditory Research Center, Caruso Department of Otolaryngology - Head and Neck Surgery, Keck School of Medicine, University of Southern California, Los Angeles, California, USA.
Trends in hearing
|December 13, 2024
概括
耳植入物 (CI) 用户表现出改善的音调流分离,有助于音乐感知. 然而,这种好处并不延伸到噪音中的语音分离,这表明不同的处理机制.
科学领域:
- 听觉神经科学 听觉神经科学
- 语音感知 语音感知
- 听力科学 听力科学
背景情况:
- 耳植入物 (CI) 用户在背景噪音中面临音乐欣赏和语音识别方面的挑战.
- 对这些听觉任务来说,有效地将声音源分成感知流是至关重要的.
研究的目的:
- 调查频率和基本频率 (F0) 歧视和流隔离能力在CI用户和正常听力个体之间的关系.
- 为了确定听觉区分能力是否能预测分离音声和语音流的表现.
主要方法:
- 测量频率和F0对纯音和复杂音的区别.
- 使用领先/滞后检测任务对音色流进行评估流分离.
- 在具有信息掩饰的竞争性语音中评估自发的单词识别.
主要成果:
- 当频率或F0在流之间不同时,CI用户在音色流分离方面表现出显著的好处.
- 在CI用户中,在流分离和复杂的音调歧视之间发现了强烈的线性关系 (42%的共变性).
- 在操纵F0线索时,对竞争性语音没有流分离的好处.
结论:
- 在CI用户中增强的音色流分离可能通过改善仪器分离来受益于音乐听力.
- 语音流分离缺乏好处表明与音调相比,处理语音的不同神经机制或要求是不同的.
- 需要进一步的研究来了解CI用户对语音处理的具体要求.
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