de Jong K J
Department of Linguistics, Indiana University, Bloomington 47405, USA.
J Acoust Soc Am. 1997 Apr;101(4):2221-33. doi: 10.1121/1.418206.
Various studies have revealed apparent motoric compensation between articulatory structures such as the jaw and lips which contribute to articulatory goals of vocal tract constriction. The present study, like Perkell et al. [J. Acoust. Soc. Am. 93, 2948-2961 (1993)] and Savariaux et al. [J. Acoust. Soc. Am. 98, 2428-2442 (1995)], investigates the possibility of compensation between labial protrusion and constriction and dorsovelar constriction-a relationship based on the similarity of the acoustic effects of such articulatory goals. The present study differs from these earlier studies in that it assumes an articulatory model of gestures, and it examines nonperipheral back vowels. X-ray microbeam records of American English speakers producing back vowels under various stress conditions were investigated. Results reveal systematic speaker differences in the direction of correlation between measures of labial and dorsal position. These results show that speakers differ as to whether they exhibit coupling between labial and dorsal activity in the lowering of back vowel timbre.
多项研究揭示了诸如下颌和嘴唇等发音结构之间明显的运动补偿，这些补偿有助于实现声道收缩的发音目标。本研究与佩凯尔等人[《美国声学学会杂志》93, 2948 - 2961(1993)]以及萨瓦里奥等人[《美国声学学会杂志》98, 2428 - 2442(1995)]的研究一样，探究了唇突出与收缩以及背软腭收缩之间补偿的可能性——这种关系基于此类发音目标的声学效应的相似性。本研究与这些早期研究的不同之处在于，它采用了手势的发音模型，并研究了非周边后元音。对在各种重音条件下发出后元音的美国英语使用者的X射线微束记录进行了研究。结果揭示了在唇和背位置测量之间的相关方向上存在系统性的说话者差异。这些结果表明，在降低后元音音色时，说话者在唇和背活动之间是否表现出耦合方面存在差异。
