This dissertation deals with the application of experimental [acoustic and perceptual] phonetics to the teaching of pronunciation. The issue is illustrated by Japanese speakers’ difficulties in learning French vowels in general. Experiments were specifically conducted on the vowels -u y ø-. The objective is to elucidate the case of individual phones depending on whether or not their phonemic status and their phonetic realisation differ in the two languages under study. French -u- differs phonetically from its phonemic counterpart, Japanese -u-. The present study confirms that French -u-, which is phonemically “similar” [to Japanese -u-], turns out to be more difficult than the “new” vowel -y-, which has no phonemic or phonetic counterpart in Japanese. The production of -ø-, which is phonemically “new” but acoustically close to Japanese -u-, seems to present still less difficulty. The dissertation also brings a reflection on t! he teaching of pronunciation. The analysis of general French textbooks published in Japan suggests that learners and teachers are seldom aware of the difference in the difficulties caused by the three vowels -u y ø-. Also, some methods of pronunciation teaching [some traditional, others new] are presented in terms of how they foster learners’ awareness of these difficulties. The goal of this dissertation is to help to shed light on the learning processes of the pronunciation of foreign languages, and to improve its learning and teaching.
