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Locus equations and coarticulation in three Australian languages.

Simone Graetzer¹, Janet Fletcher¹, John Hajek¹

¹Phonetics Laboratory, School of Languages and Linguistics, University of Melbourne, Melbourne, Victoria, Australia.

The Journal of the Acoustical Society of America

|February 21, 2015

Summary

Australian languages show place-dependent vowel-to-consonant coarticulation. Consonants are more sensitive to following vowels, with anticipatory coarticulation exceeding carryover effects.

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Area of Science:

Phonetics
Linguistics
Acoustic analysis

Background:

Locus equations are used to analyze vowel-to-consonant coarticulation.
Previous research indicates place-dependent differences in coarticulation across languages.
Consonantal articulatory constraint influences coarticulatory sensitivity.

Purpose of the Study:

To investigate vowel-to-consonant coarticulation in Australian languages using locus equations.
To measure F2 variance and consonantal coarticulatory sensitivity.
To compare coarticulation patterns with European languages.

Main Methods:

Analysis of F2 data for plosives in three Australian languages.
Application of locus equations to determine coarticulation magnitude.
Measurement of F2 variance at vowel-consonant boundaries.

Main Results:

Locus equation slopes showed place-dependent differences in coarticulation.
Non-coronal consonants (bilabial, velar) had higher slopes than coronals.
Consonants were more sensitive to following vowels (anticipatory coarticulation).

Conclusions:

Coarticulation magnitude and sensitivity vary inversely with articulatory constraint.
Anticipatory coarticulation exceeds carryover coarticulation in these Australian languages.
Findings contrast with European language patterns, highlighting language-specific coarticulation strategies.