Tonal context influences tone-duration interaction: Evidence from Cantonese

Area of Science:

• Phonetics
• Linguistics
• Acoustic Phonetics

Background:

• Phonetic typology suggests an inverse relationship between syllable duration and average fundamental frequency (f0).
• Tones with dynamic f0 movement are often associated with longer syllables.
• Instrumental studies on tone-duration interaction are limited and may be confounded by tonal context effects.

Purpose of the Study:

• To investigate the effect of tonal environment on the durational realization of tones in Cantonese.
• To determine if tone-dependent duration variation is governed by the tonal context.
• To discuss implications for phonetic typology regarding tone-duration interaction.

Main Methods:

• Instrumental phonetic investigation of Cantonese tones.
• Analysis of syllable duration and fundamental frequency (f0) in different tonal contexts.
• Controlled comparison of tone-duration patterns.

Main Results:

• Tone-dependent duration variation in Cantonese is significantly influenced by the surrounding tonal context.
• The findings indicate that tonal environment plays a crucial role in shaping syllable duration.
• Evidence suggests that phonetic constraints on tonal movement impact duration realization.

Conclusions:

• The study demonstrates that tonal context is a governing factor in Cantonese tone-duration interaction.
• Findings challenge existing phonetic typological generalizations about tone-duration relationships.
• Further research is needed to fully understand the interplay between tone, context, and duration across languages.