Pabon Peter, Stallinga Rob, Södersten Maria, Ternström Sten
Institute of Sonology, Royal Conservatory, The Hague and Voice Quality Systems, Utrecht, The Netherlands.
Royal Conservatory, The Hague, The Netherlands.
J Voice. 2014 Jan;28(1):36-51. doi: 10.1016/j.jvoice.2013.06.005. Epub 2013 Sep 29.
A longitudinal study was performed on the acoustical effects of singing voice training under a given study program, using the voice range profile (VRP).
Pretraining and posttraining recordings were made of students who participated in a 3-year bachelor singing study program. A questionnaire that included questions on optimal range, register use, classification, vocal health and hygiene, mixing technique, and training goals was used to rate and categorize self-assessed voice changes. Based on the responses, a subgroup of 10 classically trained female voices was selected, which was homogeneous enough for effects of training to be identified.
The VRP perimeter contour was analyzed for effects of voice training. Also, a mapping within the VRP of voice quality, as expressed by the crest factor, was used to indicate the register boundaries and to monitor the acoustical consequences of the newly learned vocal technique of "mixed voice." VRPs were averaged across subjects. Findings were compared with the self-assessed vocal changes.
Pre/post comparison of the average VRPs showed, in the midrange, (1) a decrease in the VRP area that was associated with the loud chest voice, (2) a reduction of the crest factor values, and (3) a reduction of maximum sound pressure level values. The students' self-evaluations of the voice changes appeared in some cases to contradict the VRP findings.
VRPs of individual voices were seen to change over the course of a singing education. These changes were manifest also in the average group. High-resolution computerized recording, complemented with an acoustic register marker, allows a meaningful assessment of some effects of training, on an individual basis and for groups that comprise singers of a specific genre. It is argued that this kind of investigation is possible only within a focused training program, given by a faculty who has agreed on the goals.
使用嗓音音域轮廓（VRP）对在特定研究项目下的歌唱嗓音训练的声学效果进行纵向研究。
对参加为期3年的本科歌唱学习项目的学生进行训练前和训练后的录音。使用一份包含关于最佳音域、声区运用、分类、嗓音健康与卫生、混合技巧以及训练目标等问题的问卷，对自我评估的嗓音变化进行评分和分类。根据回答，挑选出10名接受古典声乐训练的女性嗓音组成一个亚组，该亚组在同质性上足以识别训练效果。
分析VRP周长轮廓以研究嗓音训练的效果。此外，用由波峰因数表示的嗓音质量在VRP内的映射来指示声区边界，并监测新学的“混声”声乐技巧的声学效果。对各受试者的VRP进行平均。将结果与自我评估的嗓音变化进行比较。
平均VRP的训练前/后比较显示，在中声区，（1）与响亮的胸声相关的VRP面积减小，（2）波峰因数值降低，（3）最大声压级值降低。学生对嗓音变化的自我评估在某些情况下似乎与VRP结果相矛盾。
在歌唱教育过程中，个体嗓音的VRP会发生变化。这些变化在平均组中也很明显。高分辨率计算机录音，辅以声学声区标记，能够在个体层面以及针对由特定流派歌手组成的群体，对训练的一些效果进行有意义的评估。有人认为，只有在由已就目标达成一致的教师提供的集中训练项目中，这种调查才有可能进行。
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