“…Some were interested in the synaesthetic effects that a few pairs of vowels arouse (Sapir, 1929;Brown, Black, & Horowitz, 1955;Taylor & Taylor, 1962;Kim, 1977;Diffloth, 1994cited in Tsur, 2006Hinton, Nichols & Ohala, 1995;Tsur, 2006), which has been already applied to some practical fields (Parault & Schwanenflugel, 2006;Lowrey & Shrum, 2007;Coulter & Coulter, 2010;Baxter & Lowrey, 2011;Imai, Miyazaki, Yeung, Hidaka, Kantartzis, Okada, & Kita 2015). Some others focus on the prosodic effects on lexical categories that make it easier to distinguish nouns from verbs.…”