P7. Experimental investigation of the definition of reference accent distance between speakers toward automatic accent clustering of speakers of World Englishes (Summaries of Presentations at the 28th General Meeting) 論文 Tianze Shi・Shun Kasahara・Nobuaki Minematsu・Daisuke Saito・Keikichi Hirose ·2014 ·『音声研究』 18(3) pp. 62-63 doi:10.24467/onseikenkyu.18.3_62_2