Description:
<jats:p>Louder speech is primarily associated with greater respiratory system driving pressures, but several studies have indicated that speakers may also adjust their laryngeal settings in louder speech. In combination, these observations suggest the possibility of a tradeoff between respiratory and laryngeal mechanisms for increasing loudness, but little past work has obtained both respiratory and laryngeal measures in multiple speakers to assess the range of individual strategies. In this study, we assess measures of voice quality obtained from electroglottographic [EGG] signals in multiple female speakers. Respiratory kinematics, obtained by inductance plethysmography, were recorded simultaneously. Louder speech was obtained naturalistically, by changing speaker-interlocutor distance. Previous analyses of the respiratory data indicate that speakers differ considerably in how much they vary their respiratory kinematics when producing loud speech. We hypothesize that speakers who show less variation in their respiratory behavior will show more extreme changes in the EGG signals between normal and loud speech. We will also evaluate whether EGG differences between normal and loud speech vary as a function of vowel quality, in light of past work showing systematic differences in voice quality measures across vowels.</jats:p>