Related Experiment Videos
Effect of lung volume on voice onset time (VOT)
J D Hoit1, N P Solomon, T J Hixon
1Department of Speech and Hearing Sciences, University of Arizona, Tucson.
Journal of Speech and Hearing Research
|June 1, 1993
Summary
Voice onset time (VOT) changes with lung volume. Longer VOT occurred at high lung volumes, while shorter VOT occurred at low lung volumes, impacting speech disorder assessments.
Area of Science:
- Speech science
- Laryngeal physiology
- Acoustic phonetics
Background:
- Voice onset time (VOT) is a key acoustic measure.
- Laryngeal function is crucial for speech production.
- Lung volume influences respiratory and laryngeal functions.
Purpose of the Study:
- To investigate the relationship between lung volume and voice onset time (VOT).
- To determine if VOT varies significantly across different lung volumes.
Main Methods:
- Five adult males participated in the study.
- Participants repeatedly produced stressed /pi/ syllables.
- Recordings were made across a range of lung volumes, from total lung capacity to residual volume.
Main Results:
- Voice onset time (VOT) demonstrated variability with lung volume.
- In most participants, VOT was longer at higher lung volumes.
- Conversely, VOT was shorter at lower lung volumes.
Conclusions:
- Lung volume is a significant factor influencing voice onset time (VOT).
- VOT measurements require consideration of lung volume for accurate laryngeal behavior assessment.
- Findings are relevant for both healthy speech production and understanding speech disorders.