Kitajima K, Tanabe M, Isshiki N
Ann Otol Rhinol Laryngol. 1979 Jan-Feb;88(1 Pt 1):52-5. doi: 10.1177/000348947908800109.
To establish an experimental basis for surgical approximation of the anterior cricothyroid distance which aims at raising the vocal pitch, the relationship between vocal pitch and the cricothyroid distance was analyzed in voices produced with excised human larynges (four male and two female larynges). Within the framework of the experimental conditions, the following conclusions were drawn: 1) The vocal pitch expressed in semitones was almost linearly related to the cricothyroid distance, with an increase of 0.15 to 0.90 semitones per milimeter of cricothyroid approximation. 2) The rise in vocal pitch reached a plateau when the force applied to shorten the cricothyroid distance reached 30 to 50 gm.
为了建立旨在提高音调的环状软骨-甲状软骨前间距手术拉近的实验基础，我们分析了用切除的人喉（四个男性喉和两个女性喉）发出的声音中音调与环状软骨-甲状软骨间距之间的关系。在实验条件范围内，得出以下结论：1）以半音表示的音调与环状软骨-甲状软骨间距几乎呈线性关系，环状软骨-甲状软骨每拉近1毫米，音调增加0.15至0.90个半音。2）当用于缩短环状软骨-甲状软骨间距的力达到30至50克时，音调升高达到平稳状态。
