// Effect of Vowel Type on Aerodynamic Measures of Estimated Subglottal Pressure and Airflow
43名健康成人受試，測量/i、/u、/ɑ/與/pV/的MAF與Psub｜發現：/i/較/ɑ/MAF低，/i/於/pV/的Psub較/ɑ/高（/u/居中），F0無影響；效應量小且由上喉阻抗（發音差異）解釋，代表元音選擇不會顯著改變常模，數值可互換且誤差甚微。
// This study tested whether vowel choice (tongue height/advancement and vocal tract constriction) affects aerodynamic voice measures (mean airflow, MAF, and estimated subglottal pressure, Psub) and thus might change normative expectations. Forty-three healthy adults produced sustained vowels (/i/, /u/, /ɑ/) and repeated /pV/ syllables while MAF, Psub, and F0 were measured with a Phonatory Aerodynamic System. Results showed small but significant, predictable vowel effects: sustained /i/ had lower MAF than /ɑ/, and syllables with /i/ had higher Psub than those with /ɑ/, with /u/ intermediate; F0 did not predict MAF or Psub. Because effect sizes were small, measures were highly correlated, and supraglottal impedance (articulatory differences) explained the effects, vowel choice is unlikely to substantially alter normative expectations and values can be converted between vowels with little error.
Published 2026年9月11日
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