AI Article Synopsis
- The study investigates vocal attack time (VAT) values during vocal fold vibrations across different frequency levels in normal speakers.
- Both sound pressure and electroglottographic recordings were taken from 13 participants producing sustained vowels at various pitch levels.
- Results show that VAT is less for high-frequency vibrations compared to low and mid-frequency conditions, linking VAT to increased vocal fold tension during high-frequency phonation.
Article Abstract
Objective: To examine vocal attack time (VAT) values associated with the production of low, mid, and high rates of vocal fold vibration in normal speakers.
Study Design: Sound pressure (SP) and electroglottographic (EGG) recordings were obtained for eight female and five male subjects while producing multiple tokens of the sustained vowels /ɑ/, /i/, and /u/ at comfortable loudness and at mid, low (-3 semitones), and high (+6 semitones) rates of vocal fold vibration.
Methods: Generalized sinusoidal models of the SP and EGG signals were computed to compare rates of amplitude change. VAT was computed from the time lag of the cross-correlation function.
Results: Adjusted mean VAT for the high frequency condition was smaller than the adjusted mean VAT values for the low- and mid-frequency conditions. There was no significant difference between the mid and low frequency conditions.
Conclusions: Findings reveal an association of the VAT measure with increases in vocal fold tension associated with the production of high rates of vocal fold vibration.
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| http://dx.doi.org/10.1016/j.jvoice.2012.12.004 | DOI Listing |
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