Editing Tone (linguistics) (section)

====Relationship with tone====
Kuang identified two types of phonation: '''pitch-dependent''' and '''pitch-independent'''.<ref name="Kuang2013">Kuang, J.-J. (2013). ''Phonation in Tonal Contrasts (Doctoral dissertation)''. University of California, Los Angeles.</ref> Contrast of tones has long been thought of as differences in pitch height. However, several studies pointed out that tone is actually multidimensional. Contour, duration, and phonation may all contribute to the differentiation of tones. Investigations from the 2010s using perceptual experiments seem to suggest phonation counts as a perceptual cue.<ref name="Kuang2013" /><ref>{{Cite conference| conference = Tonal Aspects of Languages-Third International Symposium| last1 = Xu| first1 = Xiaoying| last2 = Liu| first2 = Xuefei| last3 = Tao| first3 = Jianhua| last4 = Che| first4 = Hao| title = Pitch and Phonation Type Perception in Wenzhou Dialect Tone| date = 2012}}</ref><ref name="Yu Lam 2014 pp. 1320–1333">{{cite journal | last1=Yu | first1=Kristine M. | last2=Lam | first2=Hiu Wai | title=The role of creaky voice in Cantonese tonal perception | journal=The Journal of the Acoustical Society of America | publisher=Acoustical Society of America (ASA) | volume=136 | issue=3 | year=2014 | issn=0001-4966 | doi=10.1121/1.4887462 | pages=1320–1333| pmid=25190405 | bibcode=2014ASAJ..136.1320Y | doi-access=free }}</ref>