Acquisition of durational patterns of Japanese consonants by native speakers of South-east languages

1.日本留学生产生的日语停顿的持续时间模式，分析了三个形态词中停顿辅音的持续时间。对于法语受试者，美国人和中国人的闭合期vot相对于单词持续时间的比率高于日语受试者，这一比例更大，而且他们的发音经常被日本人认为是双音节的。2.日语单辅音和双音节的辨认。对于西班牙语受试者，单辅音和双音的错误率都很低。朝鲜族被试在高低口音测试词中的单辅音识别错误率显著高于韩国被试。泰语受试者在高-低和低-高重音单词中的单辅音错误率都较高。3.长短元音的识别。韩国语和泰语受试者在识别长元音时的错误率普遍高于短元音。当长元音位于词尾位置，且音调较低时，错误率尤其高。4.影响长、短元音感知的声学因素以韩国被试和日本被试为被试，比较声学因素对声长感知的影响。对纯音和元音的时长进行了识别和辨别。在辨别测试中，韩国人和日本人都表现出刺激声音的音高和强度的影响。但在长短元音的辨认上，只有朝鲜族受试者表现出音高和音强的影响。研究证实，日本人对时间的知觉是建立在纯持续时间特征上的。

1.Durational pattern of Japanese stops produced by the foreign learners of Japanese.Duration of the stop consonants in the 3-morae words were analyzed. For the French subjects, ratios of the closure period + VOT relative to the word duration were dose to that by native Japanese For the Americans and Chinese, the ratios were greater and their productions were often perceived as Sokuon (geminate) by native Japanese.2.Identification of Japanese single consonants and Sokuon (geminate).The test words were the 2-syllable words. For the Spanish subjects, the error rate was low both for the single consonant and geminate. The Korean subjects showed remarkably higher error rate for the identification of single consonants in the test words of the High-Low accent. The Thai subjects showed high error rate for the single consonants both in the High-Low and Low-High accent words.3.Identification of the long and short vowels.The test words were 2-syllable words. Korean and Thai subjects generally showed higher error rate in identifying long vowels than short vowels. Error rate was especially high when the long vowels were located in the word final position and the pitch was low.4.Acoustic factors affecting the perception of the long-and short vowels.Perceptual experiments were conducted with the Korean subjects and the Japanese subjects to compare the acoustic factors affecting the perception of the sound duration. The identification and discrimination of the duration of the pure tones and the vowel sounds were examined. In the discrimination tests, both the Korean and the Japanese subjects showed the influence of the pitch and intensity of the stimulus sounds. However, in the identification of the long and short vowels, only the Korean subjects showed an influence of the pitch and intensity. It was confirmed that the Japanese has a timing perception based on the purely durational characteristics.