A model based on F1F2 values for native and non-native speakers' spontaneous speech

如何相似的元音质量所产生的母语为英语和日本英语学习者。元音产生这两种类型的扬声器进行了分析与共振峰值的测量。这些共振峰F1和F2对应于舌头的高度和位置。在某种程度上，这些声学特征与舌头在发音中的位置特征密切相关。根据语言感知理论，人们的听觉系统对共振峰频率的变化非常敏感。日本英语学习者对本族语中的五个元音的感知和辨别。当他们感知和辨别英语元音时，他们可能不会以与日语相同的方式这样做，但他们可能会以类似的方式这样做。按照这种思维方式，我们不能说母语为英语的人和日本英语学习者在感知和产生的元音性质上有相似之处，除非感知和产生的是共振峰值的特征。这些共振峰产生于元音空间内。无论是英语母语者还是英语的日本学习者，在说英语时，元音空格的使用都是类似的。为了总结本研究中四个实验的结果，本文尝试性地提出了一个基于F1F2值的英语本族语者和日本英语学习者的模型。

How similar vowel qualities produced by native English speakers and Japanese learners of English are presented. Vowels produced by these two types of speakers are analyzed with measurements of formant values. These formants, F1 and F2, correspond to height and position of a tongue. In a way, these acoustic features are strongly connected to features of location of tongues in articulation. On the bases of language perception theories, it is estimated that people's auditory system is sensitive to changes in formant frequencies. Japanese learners of English perceive and discriminate five vowels of their own native language. When they perceive and discriminate vowels of English, they may not do that in the same way with Japanese language but they might do that in a similar way. According to this way of thinking, we can not say that there are similarities in vowel qualities perceived and produced between native English speakers and Japanese learners of English, except the cases that what is perceived and produced are features of formant values. These formants are produced within vowel spaces. It is expected that vowel spaces are used similarly when English is spoken either by native English speakers or Japanese learners of English. To conclude the results of four experiments conducted in this study, a model based on F1F2 values for native speakers of English and Japanese learners of English are tentatively proposed.