Comparison of direct and indirect calculations of laryngeal airway resistance in connected speech |
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| Authors: | Monica A McHenry Samuel T Kuna John T Minton Christi R Vanoye |
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| Institution: | *Galveston Institute of Human Communication, The Transitional Learning Community, U.S.A.;†Department of Internal Medicine, Pulmonary Division, The University of Texas Medical Branch, Galveston, Texas, U.S.A. |
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| Abstract: | Direct measures of subglottal pressure obtained through a tracheal puncture were used to calculate laryngeal airway resistance. Six subjects completed tasks including syllable trains and more natural speech samples produced at three loudness levels. Direct calculations of natural speech resistance values were compared with indirect estimates obtained during syllable train production. The degree of correspondence between direct and indirect calculations varied by subject. Overall, the smallest relative errors among calculations occurred for syllable trains, with higher relative errors for the monologue and sentence. For loudness conditions, the smallest and largest relative errors occurred for soft and loud productions, respectively. The clinical utility of indirect estimation is questioned and suggestions for improving its validity are provided. |
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| Keywords: | Author Keywords: Laryngeal airway resistance Subglottal pressure Connected speech |
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