“…The pitch correlate of the lexical tone in Mandarin Chinese is not a single point but a pitch contour, which is called pitch register. Previous studies found that, in Mandarin Chinese, focus accent is realized by the expansion of the pitch range of the lexical tone (pitch register) and by the lengthening of the syllable duration (Chen, 2006;Chen and Gussenhoven, 2008;Xu, 1999;Jia et al, 2008Jia et al, , 2006Liu and Xu, 2006;Wang et al, 2002). As to what gave rise to the pitch range expansion, some studies found that, for two-character words, focus accent mainly raises the pitch maximum of H tones and has no significant effect on L tones (Jia et al, 2008(Jia et al, , 2006.…”