The effect of the Modified Voiced Lip Trill (MVoLT) training on vocal changes of musical theater students

Abstract

The Modified Voiced Lip Trill (MVoLT) training is a variant of voiced lip-till training characterized by increased loudness, lowered laryngeal position, and lip contact facilitated with fingers. The purpose of the current study was to assess the effect of the MVoLT training program on vocal changes of musical singing theater students. A total of 32 musical theater students (17 males and 15 females, age ranging from 18 to 29) participated in the study. For about three months, each participant was tutored using a systematic program focussing on the MVoLT training, accompanied by certain facilitating strategies. Pre-& post-training multi-dimensional vocal characteristics were assesed and compared. Results showed that cepstral peak prominence during vowel phonation increased after training, while its standard deviation and Cepstral Spectral Index of Dysphonia decreased. When an aerodynamic assessment was performed, maximum phonation time, subglottal pressure, mean airflow rate increased, while electroglottographic measures did not change. In addition, decreased psychometric measures, higher maximum pitch, and increased vocal range were noted after training. In conclusion, the MVoLT was proven to have a potential as an effective and safe training method for musical theater singing.

Tube phonation in water for patients with hyperfunctional voice disorders: The effect of tube diameter and water immersion depth on bubble height and maximum phonation time*

“…입술 트릴이 나 혀트릴은 성대와 입술 혹인 혀의 이중 진동원을 가지며, 이 로 인하여 구강내압의 저주파수대 진동이 발생한다. 아울러, 구 강을 폐쇄함으로써 성문 상압이 증가하여 부드러운 성대접촉 을 통한 발성과 근육이완에 도움을 주어 가수, 성악인 등 보컬 워밍으로서 오래전부터 사용되어 온 SOVTE의 방법이다 , Lee et al, 2017Maxfield et al, 2015). 최근에는 입술트 릴과 마찬가지로 이중 진동원을 가지는 튜브, 빨대를 사용하여 물에서 거품이 나면서 발성할 수 있도록 구강 압력을 높이는 Lax Vox를 많이 사용하고 있다 (Titze, 2009).…”