Phonation into a tube as a voice training method: acoustic and physiologic observations.

摘要: Phonation into narrow glass tubes has been used as a voice training method. The present study examined phonatory and quality during after tube phonation. methods were (a) electromyography with surface electrodes, (b) dual-channel electroglottography from which the vertical larynx position was derived (c) inverse filtering of acoustic signal vowel samples produced before immediately exercise. seemed to cause tendency heighten laryngeal position. For female subjects (n = 3) exercise tended lead increased vocal effort in production and, contrast, for more relaxed males 2).