Department of Psychology, Queen's University, Humphrey Hall, 62 Arch Street, Kingston, Ontario K7L 3N6, Canada.
J Acoust Soc Am. 2011 Feb;129(2):955-65. doi: 10.1121/1.3531932.
Two auditory feedback perturbation experiments were conducted to examine the nature of control of the first two formants in vowels. In the first experiment, talkers heard their auditory feedback with either F1 or F2 shifted in frequency. Talkers altered production of the perturbed formant by changing its frequency in the opposite direction to the perturbation but did not produce a correlated alteration of the unperturbed formant. Thus, the motor control system is capable of fine-grained independent control of F1 and F2. In the second experiment, a large meta-analysis was conducted on data from talkers who received feedback where both F1 and F2 had been perturbed. A moderate correlation was found between individual compensations in F1 and F2 suggesting that the control of F1 and F2 is processed in a common manner at some level. While a wide range of individual compensation magnitudes were observed, no significant correlations were found between individuals' compensations and vowel space differences. Similarly, no significant correlations were found between individuals' compensations and variability in normal vowel production. Further, when receiving normal auditory feedback, most of the population exhibited no significant correlation between the natural variation in production of F1 and F2.
进行了两项听觉反馈干扰实验，以研究元音中前两个共振峰控制的本质。在第一个实验中，说话者听到他们的听觉反馈中 F1 或 F2 的频率发生了偏移。说话者通过改变受干扰共振峰的频率来改变其频率，使其向相反的方向偏移，但不会产生未受干扰共振峰的相关变化。因此，运动控制系统能够对 F1 和 F2 进行精细的独立控制。在第二个实验中，对接受 F1 和 F2 都受到干扰的反馈的说话者的数据进行了大型荟萃分析。发现 F1 和 F2 的个体补偿之间存在中度相关性，这表明 F1 和 F2 的控制在某个水平上以共同的方式进行。虽然观察到个体补偿幅度的范围很广，但个体补偿与元音空间差异之间没有发现显著相关性。同样，个体补偿与正常元音产生的变异性之间也没有发现显著相关性。此外，当接收到正常的听觉反馈时，大多数人在 F1 和 F2 的产生自然变化之间没有发现显著的相关性。
