The role of anterior lingual gesture delay in coda /r/ lenition: An ultrasound tongue imaging study
Scobbie, James M.
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Lawson, E., Scobbie, J. M. & Stuart-Smith, J. (2015) The role of anterior lingual gesture delay in coda /r/ lenition: An ultrasound tongue imaging study. In: Proceedings of the 18th International Congress of Phonetic Sciences (ICPhS), Glasgow, 10-14 August 2015, [Paper no: 332].
We investigate the contribution that lingual gesture delay makes to lenition of postvocalic /r/. This study uses a socially-stratified, audio-ultrasound corpus of Scottish English containing recordings from two sociolects; one with postvocalic /r/ weakening and the other with strengthening. We quantify auditory strength of rhoticity and the timing of the anterior lingual gesture relative to the offset of voicing in CVr words: bar, bore, fur, or onset of a following consonant in CVrC words: farm, herb, burp, in order to show that there is a statistically significant correlation between weak rhoticity and a late articulatory gesture. Our ultrasound data also show that during the process of final consonant vocalization/deletion, underlying articulatory gestures may persist.