The physiological study on various phonation methods and their clinical application.

在这个研究项目中，发声方法进行了生理学研究。在临床情况下，采用日本逻辑音学学会推荐的GRBAS系统对语音质量进行评价。然而，评价取决于演讲材料和听者。据了解，评价分数因演讲材料的不同而不同。总体而言，持续发音的成绩比阅读材料差。为了研究声音的传递能力，我们让一位歌手唱一些带有一定情感信息的旋律。我们从心理声学的角度衡量了运输的效果。结果表明，一些声学参数被认为对传递情感或审美信息具有重要作用。我们计划从生理学的角度继续这项研究。作为临床应用，我们研究了一种发声疗法的技术。推力运动从多个生理学角度进行研究。同时测量体动发声时间、空气动力学参数和声门下压力。结果表明，推举练习需要特殊的喉部姿势，有助于提高嗓音质量。本研究建议对发声治疗技术进行生理学研究，以便更有效地进行发声治疗。

In this research program, the phonation method has been investigated physiologically. In clinical situation, the voice quality is evaluated by using GRBAS system which is recommended by the Japan Society of Logopedics and Phoniatrics. However, the evaluation is dependent on the speech materials andlisteners. It has been clarified that the evaluation scores were varied depending on the speech materials. In general, the sustained phonation got poor scores than the read materials. In order to study the ability of conveyance of the voice, we asked a singer to sing some melodies with a certain emotional message. We measured the efficacy of conveyance psychoacoustically. The results indicated that some acoustic parameters are thought to have important roles to transfer the emotional or aesthetic information. We are planning to continue this research from the physiological point of view.As a clinical application, a technique of the voice therapy was studied. Pushing exercise was sutdied from various physiological points. The timing between body motion and phonation, the aerodynamic parameters and subglottic pressure were measured simultaneously. The reaults indicates that the pushing exercise requires a special laryngeal gesture which contribute to improvement of voice quality. This study suggest that the technique of the voice therapy should be investigated physiologically to perform the vioce therapy more effectively.