Department of Communication Disorders, Brigham Young University, Provo, Utah, USA.
Folia Phoniatr Logop. 2024;76(5):491-500. doi: 10.1159/000536001. Epub 2024 Feb 20.
We examined the effects of four types of voicing on vocal tract movements by comparing the articulatory kinematics of whispered speech to habitual, loud, and soft conditions.
Participants included 10 males and 10 females with no history of communication disorders. They read six stimulus sentences in habitual, loud, soft, and whispered conditions. An electromagnetic articulograph tracked the tongue, jaw, and lip movements. Analysis focused on the words we do from a longer sentence. Vertical tongue/jaw and horizontal lip movements were measured during the production of the retracted and rounded front and back vowels in we do.
Soft speech led to smaller and slower lip movements than in the habitual condition. Displacement increased for the tongue and jaw in loud and whispered speech compared to the habitual condition. Tongue and jaw velocity increased for loud but not for whispered speech compared to the habitual condition. Utterance duration increased for loud and whispered conditions.
The increasing tongue and jaw displacement and velocity from soft to habitual to loud speech reported here is consistent with previous accounts. Whispering was less intense than soft speech, yet it involved larger tongue and jaw movements than habitual speech, possibly reflecting a speaker's focus on greater articulatory clarity when the acoustic signal is the weakest.
我们通过比较低语与习惯性、大声和轻声条件下的发音运动学，研究了四种发声方式对声道运动的影响。
参与者包括 10 名男性和 10 名女性，他们没有言语障碍史。他们在习惯性、大声、轻声和低语条件下朗读了六个刺激句。电磁发音仪跟踪舌、颌和唇的运动。分析集中在我们从更长的句子中做的词上。在 we do 中，我们测量了产生收缩和圆唇前、后元音时垂直舌/颌和水平唇运动。
轻声比习惯性发音导致的唇运动更小、更慢。与习惯性条件相比，大声和轻声发音时，舌和颌的位移增加。与习惯性条件相比，大声发音时舌和颌的速度增加，但轻声发音时没有增加。大声和轻声条件下的话语持续时间增加。
与以前的研究一致，我们这里报告的从轻声到习惯性再到大声发音时，舌和颌的位移和速度增加。低语的强度比轻声小，但比习惯性发音时的舌和颌运动更大，这可能反映了说话者在声音信号最弱时更注重更大的发音清晰度。
