米語数字列音声の韻律構造の比較検討 : 調音と音声の分析(<特集>音声科学の最前線 : C/Dモデルその音声学・音形論への衝撃)

抄録

This study compares the acoustically and articulatorily derived rhythmic structure of American English utterances of a short three digit phrase uttered within a semi-spontaneous dialogue. The Converter/Distributor model of Osamu Fujimura forms the framework for determining the articulatory rhythm. Within this model, syllable stress is measured as a scalar representation of articulatory strength. Articulatory syllable duration is an abstract representation of syllable magnitude and is directly proportional to it. Results show that the acoustic rhythmic structure varies greatly from the articulatory rhythmic structure for these semi-spontaneous utterances. Emphasis was shown to change syllable durations, syllable magnitudes and boundary magnitudes.