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Dialect variation in formant dynamics: The acoustics of lateral and vowel sequences in Manchester and Liverpool English

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Dialect variation in formant dynamics : The acoustics of lateral and vowel sequences in Manchester and Liverpool English. / Kirkham, Sam; Nance, Claire; Littlewood, Bethany; Lightfoot, Kate; Groarke, Eve.

In: Journal of the Acoustical Society of America, Vol. 145, No. 784, 28.02.2019, p. 784–794.

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Kirkham, Sam ; Nance, Claire ; Littlewood, Bethany ; Lightfoot, Kate ; Groarke, Eve. / Dialect variation in formant dynamics : The acoustics of lateral and vowel sequences in Manchester and Liverpool English. In: Journal of the Acoustical Society of America. 2019 ; Vol. 145, No. 784. pp. 784–794.

Bibtex

@article{e3a69f2f93604b30b706b9077210363d,
title = "Dialect variation in formant dynamics: The acoustics of lateral and vowel sequences in Manchester and Liverpool English",
abstract = "This study analyses the time-varying acoustics of laterals and their adjacent vowels in Manchester and Liverpool English. We use Generalized Additive Mixed-Models (GAMMs) for quantifying time-varying formant data, which allows us to model non-linearities in acoustic time series while simultaneously modelling speaker and word level variability in the data. We compare these models to single time-point analyses of lateral and vowel targets in order to determine what analysing formant dynamics can tell us about dialect variation in speech acoustics. The results show that lateral targets exhibit robust differences between some positional contexts and also between dialects, with smaller differences present in vowel targets. The time-varying analysis shows that dialect differences frequently occur globally across the lateral and adjacent vowels. These results suggest a complex relationship between lateral and vowel targets and their coarticulatory dynamics, which problematizes straightforward claims about the realization of laterals and their adjacent vowels. We further discuss these findings in terms of hypotheses about positional and sociophonetic variation. In doing so, we demonstrate the utility of GAMMs for analysing time-varying multi-segmental acoustic signals, and highlight the significance of our results for accounts of English lateral typology.",
author = "Sam Kirkham and Claire Nance and Bethany Littlewood and Kate Lightfoot and Eve Groarke",
note = "{\textcopyright} 2019 Acoustical Society of America",
year = "2019",
month = feb,
day = "28",
doi = "10.1121/1.5089886",
language = "English",
volume = "145",
pages = "784–794",
journal = "Journal of the Acoustical Society of America",
issn = "0001-4966",
publisher = "Acoustical Society of America",
number = "784",

}

RIS

TY - JOUR

T1 - Dialect variation in formant dynamics

T2 - The acoustics of lateral and vowel sequences in Manchester and Liverpool English

AU - Kirkham, Sam

AU - Nance, Claire

AU - Littlewood, Bethany

AU - Lightfoot, Kate

AU - Groarke, Eve

N1 - © 2019 Acoustical Society of America

PY - 2019/2/28

Y1 - 2019/2/28

N2 - This study analyses the time-varying acoustics of laterals and their adjacent vowels in Manchester and Liverpool English. We use Generalized Additive Mixed-Models (GAMMs) for quantifying time-varying formant data, which allows us to model non-linearities in acoustic time series while simultaneously modelling speaker and word level variability in the data. We compare these models to single time-point analyses of lateral and vowel targets in order to determine what analysing formant dynamics can tell us about dialect variation in speech acoustics. The results show that lateral targets exhibit robust differences between some positional contexts and also between dialects, with smaller differences present in vowel targets. The time-varying analysis shows that dialect differences frequently occur globally across the lateral and adjacent vowels. These results suggest a complex relationship between lateral and vowel targets and their coarticulatory dynamics, which problematizes straightforward claims about the realization of laterals and their adjacent vowels. We further discuss these findings in terms of hypotheses about positional and sociophonetic variation. In doing so, we demonstrate the utility of GAMMs for analysing time-varying multi-segmental acoustic signals, and highlight the significance of our results for accounts of English lateral typology.

AB - This study analyses the time-varying acoustics of laterals and their adjacent vowels in Manchester and Liverpool English. We use Generalized Additive Mixed-Models (GAMMs) for quantifying time-varying formant data, which allows us to model non-linearities in acoustic time series while simultaneously modelling speaker and word level variability in the data. We compare these models to single time-point analyses of lateral and vowel targets in order to determine what analysing formant dynamics can tell us about dialect variation in speech acoustics. The results show that lateral targets exhibit robust differences between some positional contexts and also between dialects, with smaller differences present in vowel targets. The time-varying analysis shows that dialect differences frequently occur globally across the lateral and adjacent vowels. These results suggest a complex relationship between lateral and vowel targets and their coarticulatory dynamics, which problematizes straightforward claims about the realization of laterals and their adjacent vowels. We further discuss these findings in terms of hypotheses about positional and sociophonetic variation. In doing so, we demonstrate the utility of GAMMs for analysing time-varying multi-segmental acoustic signals, and highlight the significance of our results for accounts of English lateral typology.

U2 - 10.1121/1.5089886

DO - 10.1121/1.5089886

M3 - Journal article

VL - 145

SP - 784

EP - 794

JO - Journal of the Acoustical Society of America

JF - Journal of the Acoustical Society of America

SN - 0001-4966

IS - 784

ER -