平均基本频率差异对现实生活中的竞争性句子可理解性的作用
Paolo A Mesiano1, Johannes Zaar1,2, Lars Bramslw2
1Department of Health Technology, Technical University of Denmark, Kongens Lyngby.
概括
竞争声音之间的平均基本频率分离 (∆f0) 对现实生活中的语音可理解性的影响小于以前的想法. 人工语言中高度同步的音调轮,而不是典型的现实世界场景,解释了更大的先前效应.
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:
- 声音之间的基本频率分离 (∆f0) 是语音可理解性的关键提示.
- 以前的研究经常使用人工语言,限制了现实世界的适用性.
研究的目的:
- 在现实的声学场景中研究∆f0对语音可理解性影响的概括性.
- 用现实生活中的句子与人工语音材料来比较∆f0的影响.
主要方法:
- 在两个竞争声音的句子识别任务中使用了现实生活中的丹麦语句.
- 测试了15名听力正常的年轻听众,通过各种目标对面具比率 (TMR) 和∆f0值进行测试.
- 采用了受控的声学刺激操纵.
主要成果:
- ∆f0在负的TMR中表现为中度效应,在正的TMR中表现为微不足道.
- 在之前的研究中,∆f0的显著影响与人工语言中高度同步的基本频率 (f0) 轨迹有关.
- 与人工材料相比,现实生活中的语言表现出较少同步的f0轮.
结论:
- ∆f0对现实的两句竞争句子条件下的语音可理解性的影响相对较小.
- 研究结果表明,现实生活中的语音的声学特性调节了基本频率分离的好处.
- 需要重新评估∆f0在语音可理解性中的作用,考虑到自然主义的语音交互.
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