Schiavetti N, Whitehead R L, Whitehead B, Metz D E
State University of New York, Geneseo 14454, USA.
J Speech Lang Hear Res. 1998 Feb;41(1):5-17. doi: 10.1044/jslhr.4101.05.
This study investigated the effect of fingerspelling task length on temporal characteristics and perceived naturalness of speech produced during simultaneous communication. Stimulus words at four levels of fingerspelling task length were embedded in a sentence that was spoken and produced with simultaneous communication. Five temporal measures were calculated from acoustic recordings, and perceived speech naturalness was rated by a panel of listeners using a 9-point scale. Results indicated significant differences in temporal measures and naturalness ratings between the speech and simultaneous communication conditions and among levels of fingerspelling task length. Speech produced during simultaneous communication was rated as less natural and demonstrated increased interword interval, diphthong, word, and sentence durations. Regression analysis indicated significant correlations between temporal measures and perceived speech naturalness, and analysis of variance showed significant increases in segmental and interword interval durations and perceived speech unnaturalness as fingerspelling task length increased. These results are discussed in relation to previous findings regarding production and perception characteristics of speech that is altered in temporal parameters by a variety of conditions.
本研究调查了手指拼写任务时长对同步交流过程中所产生言语的时间特征和感知自然度的影响。将四种手指拼写任务时长水平的刺激词嵌入到一个通过同步交流说出并产生的句子中。从声学记录中计算出五项时间测量指标，并由一组听众使用9分制对言语感知自然度进行评分。结果表明，在言语和同步交流条件之间以及在手指拼写任务时长水平之间，时间测量指标和自然度评分存在显著差异。同步交流过程中产生的言语被评为自然度较低，且词间间隔、双元音、单词和句子时长增加。回归分析表明时间测量指标与言语感知自然度之间存在显著相关性，方差分析表明随着手指拼写任务时长的增加，音段和词间间隔时长以及言语感知不自然度显著增加。结合先前关于在各种条件下时间参数发生改变的言语的产生和感知特征的研究结果对这些结果进行了讨论。
