Effects of fundamental frequency and vocal-tract length changes on attention to one of two simultaneous talkers
Effects of fundamental frequency and vocal-tract length changes on attention to one of two simultaneous talkers
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DOI：
10.1121/1.1616924
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发表时间：
2003-11-01
影响因子：
2.4
通讯作者：
Simpson, BD
中科院分区：
文献类型：
--
作者：
Darwin, CJ;Brungart, DS;Simpson, BD
三个实验，使用协调反应测量任务来检查F0的差异和声道长度的差异对同时处理两个语音信号之一的能力的作用。第一个实验是问两个句子（最初由同一说话者说）之间的自然F0差异的增加如何影响听者专注于其中一个句子的能力。第二个实验使用了声道长度的差异，第三个实验同时使用了F0和声道长度的差异。F0大于2个半音的差异产生了系统的性能改善。当声道长度比为1.08或更大时，特别是当目标说话者的声道较短时，声道长度的差异在表现上产生了系统性的改善。这两种方法所带来的成绩提升都不如异性说话者带来的成绩提升大。系统地改变F0和声道长度，模拟性别的增量变化，比单独改变F0或声道长度产生更大的表现改善。一般来说，将两种女性声音中的一种转换为男性声音比将男性声音转换为女性声音更能提高表现。表现的提高因说话者的语调模式而异，对于那些在不同话语之间表现出语调模式变化最大的说话者来说，表现的提高最小。(C) 2003年美国声学学会。
Three experiments, used the Coordinated Response Measure task to examine the roles that differences in F0 and differences in vocal-tract length have on the ability to attend to one of two simultaneous speech signals. The first experiment asked how increases in the natural F0 difference between two sentences (originally spoken by the same talker) affected listeners' ability to attend to one of the sentences. The second experiment used differences in vocal-tract length, and the third used both F0 and vocal-tract length differences. Differences in F0 greater than 2 semitones produced systematic improvements in performance. Differences in vocal-tract length produced systematic improvements in performance when the ratio of lengths was 1.08 or greater, particularly when the shorter vocal tract belonged to the target talker. Neither of these manipulations produced improvements in performance as great as those produced by a different-sex talker. Systematic changes in both F0 and vocal-tract length that simulated an incremental shift in gender produced substantially larger improvements in performance than did differences in F0 or vocal-tract length alone. In general, shifting one of two utterances spoken by a female voice towards a male voice produces a greater improvement in performance than shifting male towards female. The increase in performance varied with the intonation patterns of individual talkers, being smallest for those talkers who showed most variability in-their intonation patterns between different utterances. (C) 2003 Acoustical Society of America.