Speech beyond the binary: Some acoustic-phonetic and auditory-perceptual characteristics of non-binary speakers

Abstract

Speech acoustics research typically assumes speakers are men or women with speech characteristics associated with these two gender categories. Less work has assessed acoustic-phonetic characteristics of non-binary speakers. This study examined acoustic-phonetic features across adult cisgender (15 men and 15 women) and subgroups of transgender (15 non-binary, 7 transgender men, and 7 transgender women) speakers and relations among these features and perceptual ratings of gender identity and masculinity/femininity. Differing acoustic-phonetic features were predictive of confidence in speaker gender and masculinity/femininity across cisgender and transgender speakers. Non-binary speakers were perceptually rated within an intermediate range of cisgender women and all other groups.