Voice quality in Australian English

Area of Science:

• Phonetics and Acoustic Phonology
• Sociolinguistics
• Australian English Dialectology

Background:

• Voice quality research in Australian English is limited.
• Understanding dialectal and regional variations in speech is crucial for linguistic analysis.
• Previous studies have not extensively compared Indigenous Australian English (Aboriginal English) and Mainstream Australian English (MAE) voice quality.

Purpose of the Study:

• To acoustically investigate and compare voice quality between Indigenous Australian English speakers and Anglo Australian (MAE) speakers.
• To identify significant differences in phonetic features like pitch (F0) and spectral tilt (H1*-H2*) between the two dialect groups.
• To explore the influence of dialect and geographical location on voice quality in Australian English.

Main Methods:

• Acoustic analysis of voice recordings from 33 Indigenous Australian English speakers and 28 Anglo Australian (MAE) speakers.
• Measurement of fundamental frequency (F0) to assess pitch.
• Measurement of spectral tilt (H1*-H2*) to evaluate voice quality.
• Statistical analysis to determine significant differences based on dialect and location.

Main Results:

• Significant differences in F0 (pitch) were found for male speakers, distinguishing between Aboriginal English and MAE.
• Significant differences in H1*-H2* (voice quality) were observed for female speakers, varying by geographical location.
• The study identified previously undocumented phonetic and sociophonetic variations in Australian English voice quality.

Conclusions:

• Dialect and location play a significant role in shaping voice quality in Australian English.
• Aboriginal English exhibits distinct acoustic characteristics compared to MAE, particularly in male speakers.
• This research contributes to a deeper understanding of sociophonetic diversity within Australian English.