Abstract
Glottal volume velocity waveform characteristics of 224 subjects, categorized in four groups according to gender and vocal training, were determined, and their relations to sound-pressure level, fundamental frequency, intra-oral pressure, and age were analyzed. Subjects phonated at three intensity conditions. The glottal volume velocity waveforms were obtained by inverse filtering the oral flow. Glottal volume velocity waveforms were parameterized with flow-based (minimum flow, ac flow, average flow, maximum flow declination rate) and time-based parameters (closed quotient, closing quotient, speed quotient), as well as with derived parameters (vocal efficiency and glottal resistance). Higher sound-pressure levels, intra-oral pressures, and flow-parameter values (ac flow, maximum how declination rate) were observed, when compared with previous investigations. These higher values might be the result of the specific phonation tasks (stressed /ae/ vowel in a word and a sentence) or filtering processes. Few statistically significant (p
Original language | English |
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Pages (from-to) | 3360-3373 |
Number of pages | 14 |
Journal | Journal of the Acoustical Society of America |
Volume | 100 |
Issue number | 5 |
Publication status | Published - Nov-1996 |
Keywords
- LARYNGEAL AIRWAY-RESISTANCE
- FLOW DECLINATION RATE
- SUBGLOTTAL PRESSURE
- VOWEL PRODUCTION
- VOICE PRODUCTION
- CHILDREN
- SINGERS
- WOMEN
- PARAMETERS
- PHONATION