词汇偏差效应对声学降级语音的可塑性
Julia R Drouin1,2, Laura N Putnam2,3, Charles P Davis4
1Division of Speech and Hearing Sciences, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Ear and hearing
|May 20, 2025
概括
词汇偏差,即根据单词上下文感知退化语音的倾向,在耳植入物 (CI) 用户和正常听力听众中得到证实. 听力训练减少了这种词汇偏差,显示了它.
科学领域:
- 听觉感知是一种听觉感知.
- 语音处理 语音处理
- 精神声学是一种精神声学.
背景情况:
- 词汇偏差影响语音感知,特别是在声信号降低的情况下.
- 这种效应对于有听力障碍的个体,如耳植入物 (CI) 用户来说,是很重要的.
- 以前的研究在实验室环境中确立了词汇偏差,但在线复制和训练效应尚未被探索.
研究的目的:
- 用在线方法复制基于实验室的关于词汇偏差的研究结果,用于退化语音.
- 在听觉训练后调查词汇偏差的可塑性.
- 测试听力训练减少了对词汇上下文的依赖,以降低语音分类的假设.
主要方法:
- 实验1:CI使用者和正常听力 (NH) 听众分类 /b/-/g/语音连续在清晰和噪声编码条件下.
- 实验2:NH听众在分类噪音-语音编码 /b/-/g/ continua.之前接受了带有反的听觉歧视培训.
主要成果:
- 在CI用户和NH听众中观察到词汇偏差效应.
- 词汇偏差在NH听众中增强了噪声编码语音的词汇偏差.
- 听力训练显著降低了NH听众的词汇偏差效应的大小.
结论:
- 基于网络的方法可以有效地测试不同听众群体的音声分类.
- 词汇偏差是动态的,可以通过听觉训练来调节.
- 这些发现为语音处理模型提供了信息,并对CI适应具有临床意义.
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