Fantini Marco, Fussi Franco, Crosetti Erika, Succo Giovanni
a Otorhinolaryngology Service , San Luigi Gonzaga Hospital, University of Turin , Orbassano , Turin , Italy.
b Audiology and Phoniatrics Unit , Azienda USL , Ravenna , Italy.
Logoped Phoniatr Vocol. 2017 Dec;42(4):146-152. doi: 10.1080/14015439.2016.1237543. Epub 2016 Sep 30.
Estill Voice Training (EVT) is a widely known programme for developing vocal skills based on partitioning the process of vocal production in order to reach control of specific structures in the vocal mechanism. The present retrospective small-scale exploratory study aims at reporting preliminary data about the efficacy of EVT - in terms of voice quality control on a specific vocal exercise - in contemporary commercial singers with a Certificate of Figure Proficiency (CFP). Thirty-five contemporary commercial singers (professional or semi-professional pop and rock singers) with no vocal complaints were recruited. The experimental group was composed of twenty singers who studied EVT and had a CFP. The control group was composed of fifteen singers who studied in Italian contemporary popular music institutions but were not familiar with EVT. Voice quality control was assessed through acoustic and perceptual analysis on a specific vocal exercise requiring sound pitch, perturbation and spectral energy distribution control. The acoustic analysis showed some significant differences between the two groups of singers both in sound perturbation control and spectral energy distribution control, suggesting a higher voice quality control ability for the experimental group. The perceptual evaluation confirmed a higher ability for the experimental group to produce recognizable voice qualities in this specific task. The reported preliminary results seem to suggest EVT as an effective educational system for developing voice quality control ability in contemporary commercial singers.
埃斯蒂尔嗓音训练（EVT）是一个广为人知的用于发展嗓音技能的项目，该项目基于对发声过程进行划分，以实现对发声机制中特定结构的控制。本回顾性小规模探索性研究旨在报告关于EVT功效的初步数据——就特定发声练习中的嗓音质量控制而言——针对拥有形象熟练证书（CFP）的当代商业歌手。招募了35名无嗓音问题的当代商业歌手（专业或半专业的流行和摇滚歌手）。实验组由20名学习EVT并拥有CFP的歌手组成。对照组由15名在意大利当代流行音乐机构学习但不熟悉EVT的歌手组成。通过对一项需要音高、微扰和频谱能量分布控制的特定发声练习进行声学和感知分析来评估嗓音质量控制。声学分析表明，两组歌手在声音微扰控制和频谱能量分布控制方面均存在一些显著差异，这表明实验组具有更高的嗓音质量控制能力。感知评估证实，实验组在这项特定任务中产生可识别嗓音质量的能力更强。所报告的初步结果似乎表明，EVT是一种用于培养当代商业歌手嗓音质量控制能力的有效教育体系。
