Vowel change in Australian English

Area of Science:

• Phonetics and phonology
• Sociolinguistics
• Acoustic analysis of speech

Background:

• Vowel systems exhibit dynamic changes, with phonetic disruptions having systemic consequences.
• Previous research confirms predictable patterns of sound change in English dialects.
• Australian English provides a unique case study for examining vowel system evolution.

Purpose of the Study:

• To investigate the nature and patterns of vowel change in Australian English.
• To compare acoustic data from two distinct time points separated by 25 years.
• To identify systemic effects and movement patterns within the vowel system.

Main Methods:

• Collection and acoustic analysis of vowel data from two subject groups.
• Multivariate analyses of variance (MANOVA) to detect significant acoustic differences.
• Examination of phonetic space to map monophthong and diphthong movements.

Main Results:

• Significant acoustic differences were found between the two data sets, confirming systemic effects.
• Evidence of chain and parallel shifts within vowel classes was observed.
• A close correspondence between monophthong and diphthong movement in phonetic space was identified.

Conclusions:

• Vowel change in Australian English is systemic and follows predictable patterns.
• Monophthong and diphthong changes are interconnected, influencing each other in parallel.
• The study provides strong evidence for ongoing, dynamic evolution within the Australian English vowel system.