Jonathan Havenhill

Articulatory Phonetics

Over the past several years, I have conducted a series of studies on variation in the articulation of the Northern Cities Shift (NCS) in Detroit and Chicago. While the NCS stands as one of the most widely studied examples of a sound change in progress, very few studies consider how this sound change, or any other sound change, is realized in terms of its articulation. In an ultrasound study of speakers from Metro Detroit, I (along with my colleague Youngah Do) found variability with respect to how fronted /ɔ/ is articulated, suggesting that speakers can use differing articulatory configurations to achieve the same acoustic change. On the other hand, the degree to which round vowels like /ɔ/ can vary in their articulation seems to be constrained by audiovisual perceptual factors, such that speakers from Chicago tend to prefer visibly round variants of fronted /ɔ/ over unround variants.

In my dissertation, I also conducted an articulatory study of back vowel fronting among speakers from Southern California and South Carolina, finding that speakers tend to retain the lip rounding gesture for fronted /u/ and /o/, contrary to some previous descriptions of these vowels as unrounded.

In joint work with Elizabeth Zsiga, One Tlale Boyer, and Stacy Petersen (Georgetown University), I investigated the labiocoronal fricatives of Setswana and Sebirwa, which are described in the literature as exhibiting frication at both a lingual and a labial constriction. We conducted a study of these sounds with a combination of ultrasound, video, acoustic, and aerodynamic analysis. We argue that the sound is not in fact doubly articulated, but instead exhibits a distinct type of secondary labialization whereby the lips are compressed rather than rounded.

Papers:

Havenhill, Jonathan. 2018. Constraints on articulatory variability: Audiovisual perception of lip rounding. Doctoral dissertation, Georgetown University. [PDF]

Havenhill, Jonathan, and Youngah Do. 2018. Visual speech perception cues constrain patterns of articulatory variation and sound change. Frontiers in Psychology 9.728. doi:10.3389/fpsyg.2018.00728.

Havenhill, Jonathan. 2015. An ultrasound analysis of the low back vowels in the Northern Cities Vowel Shift. Proceedings of the 18th International Congress of Phonetic Sciences, ed. by The Scottish Consortium for ICPhS 2015. Glasgow, UK: University of Glasgow. [PDF]

Havenhill, Jonathan. 2015. Maintenance of the cot-caught contrast among Detroit speakers: A multimodal articulatory analysis. University of Pennsylvania working papers in linguistics, Selected papers from NWAV 43, 21: 2. Philadelphia, PA: University of Pennsylvania. [PDF]

Presentations:

Havenhill, Jonathan. 2018. Audiovisual cue enhancement in the production and perception of the cot-caught contrast. Paper presented at the 47th New Ways of Analyzing Variation (NWAV47), New York, NY. [PDF]

Havenhill, Jonathan. 2018. Articulation and enhancement of fronted back vowels in American English. Poster presented at the 16th Conference of the Association for Laboratory Phonology (LabPhon16), Lisbon, Portugal.

Havenhill, Jonathan; Elizabeth C. Zsiga; One Tlale Boyer; and Stacy Petersen. 2017. Ultrasound as a tool for language documentation: The production of labio-coronal fricatives in Setswana. Paper presented at Ultrafest VIII, Potsdam, Germany. [PDF]

Havenhill, Jonathan; Elizabeth C. Zsiga; One Tlale Boyer; and Stacy Petersen. 2017. Ultrasound as a tool for language documentation: The production of labio-coronal fricatives in Setswana. Paper presented at Ultrafest VIII, Potsdam, Germany. [PDF]