Voice F0 responses to manipulations in pitch feedback
Voice F0 responses to manipulations in pitch feedback
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DOI：
10.1121/1.423073
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发表时间：
1998-06-01
影响因子：
2.4
通讯作者：
Hain, TC
中科院分区：
文献类型：
--
作者：
Burnett, TA;Freedland, MB;Hain, TC
最近的研究表明，当发声受试者听到他们的音调反馈向上或向下移动时，他们的反应是语音基频(F0)输出的变化。为了提高我们对这一反应的理解，并探索不同刺激变量对音调变化刺激下语音F0反应的影响，我们进行了三个实验。在实验1中，发现反馈强度的绝对水平和粉色掩蔽噪声的存在都不会显著影响语音F0反应的幅度或潜伏期。在实验2中，刺激大小的变化没有导致反应大小或潜伏期的系统性差异。然而，当刺激幅度从25美分增加到300美分时，与刺激方向相反的反应(相反的反应)的比例下降。同一方向反应(“跟随”反应)的比例也相应增加。在实验3中，音调变化刺激持续时间从20毫秒增加到100毫秒时，F0反应没有差异。在100-500ms之间的持续时间导致更长的持续时间的语音F0反应具有更大的反应幅度，这表明存在第二个F0反应，其潜伏期比第一个反应更长。(C)1998年美国声学学会。
Recent studies have shown that when phonating subjects hear their voice pitch feedback shift upward or downward, they respond with a change in voice fundamental frequency (F0) output. Three experiments were performed to improve our understanding of this response and to explore the effects of different stimulus variables on voice F0 responses to pitch-shift stimuli. In experiment 1, it was found that neither the absolute level of feedback intensity nor the presence of pink masking noise significantly affect magnitude or latency of the voice F0 response. In experiment 2, changes in stimulus magnitude led to no systematic differences in response magnitudes or latencies. However, as stimulus magnitude was increased from 25 to 300 cents, the proportion of responses that changed in the direction opposite that of the stimulus ("opposing" response) decreased. A corresponding increase was observed in the proportion of same direction responses ("following" response). Tn experiment 3, increases in pitch-shift stimulus durations from 20 to 100 ms led to no differences in the F0 response. Durations between 100 and 500 ms led to longer duration voice F0 responses with greater response magnitude, and suggested the existence of a second F0 response with a longer latency than the first. (C) 1998 Acoustical Society of America.