Effects of speaking rate on the vowel length distinction in Japanese
Effects of speaking rate on the vowel length distinction in Japanese
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语速对日语元音长度区分的影响
DOI：
10.1016/j.wocn.2004.02.004
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发表时间：
2004
期刊：
影响因子：
--
通讯作者：
Yukari Hirata
中科院分区：
文献类型：
--
作者：
Yukari Hirata
声学不变性的问题是，是否可以找到一个绝对或相对的持续时间值来可靠地对不同发音速率产生的日语音素短元音和长元音进行分类。刺激为日语双音节非单词(实验1)和真实单词(实验2)。四个以英语为母语的人在一个载体句子中以慢、正常和快的速度产生这些单词。测量了CV́CV上下文中重音和非重音短元音的持续时间，以及CV́VCV和CV́CVV上下文中对比的长元音的持续时间，以及单词持续时间。语速变化对长元音时长的影响大于对短元音时长的影响，表现为短元音和长元音之间的时长差异在慢语速时大于正常语速，在正常语速下大于快语速。与绝对时长相比，长短元音和三音节(Cv́Vcv或Cv́Vv)与双音节(Cv́Cv)词的比率受频率变化的影响较小。此外，元音占单词总时长的比例被发现在三个比率上区分两个元音长度类别的准确率很高。研究结果支持“相关”声学不变性存在的观点，这种不变性在说话者和语速之间保持稳定。
The issue of acoustic invariance was explored with the question of whether an absolute or relative duration value can be found to reliably classify the Japanese phonemic short and long vowels produced across different speaking rates. The stimuli were Japanese disyllabic non-words (Experiment 1) and real words (Experiment 2). Four native speakers produced these words in a carrier sentence at slow, normal, and fast rates. The duration of accented and unaccented short vowels in CV́CV contexts and contrasting long vowels in CV́VCV and CV́CVV contexts, as well as word duration, was measured. Rate changes affected the duration of long vowels more than short vowels in such a way that the duration difference between short and long vowels was greater for slow than normal, and for normal than fast speech. In contrast with the absolute durations, the ratios of long-to-short vowels and three-mora (CV́VCV or CV́CVV) to two-mora (CV́CV) words were less affected by rate changes. Furthermore, the proportion of the vowel to the total word duration was found to distinguish the two vowel length categories across three rates with high accuracy. The results support the view that “relational” acoustic invariance exists that remains stable across speakers and rates.
重新考虑弥散塞音辅音发音位置的声学不变性：来自跨语言研究的证据。
DOI：
10.1121/1.391580
发表时间：
1984
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Lahiri,A;Gewirth,L;Blumstein,SE
通讯作者：
Blumstein,SE