1 research outputs found
The effects of vocal intensity on vocal attack time (VAT)
Includes bibliographical references (p. 23-24)."A dissertation submitted in partial fulfillment of the requirements for the Bachelor of Science (Speech and Hearing Sciences), The University of Hong Kong, June 30, 2010."Thesis (B.Sc)--University of Hong Kong, 2010.Vocal attack time (VAT), is a parameter which could provide information about vocal folds
attack gesture during pre-phonatory phase. The aim of the present study was to investigate
the effects of vocal intensity on VAT. Simultaneously, sound pressure level and
electroglottographic signals were collected from 50 participants (25 females and 25 males).
The participants were asked to read aloud 12 disyllabic word stimuli using three different
intensity levels, comfortable intensity first, then soft intensity and finally loud intensity. The
data collected were then subjected to calculation of VAT values using a Matlab-based analysis
program. Results indicated that both female and male participants demonstrated the shortest
VAT values at loud intensity but the longest VAT values at soft intensity. Both gender groups
show similar performance across the three intensity levels. This study provides some
empirical data to support the use of VAT as a clinical tool for voice assessment.published_or_final_versionSpeech and Hearing SciencesBachelorBachelor of Science in Speech and Hearing Science