Chest wall vibrations in singers.
Chest wall vibrations in singers.
复制标题
歌手的胸壁振动。
DOI：
--
复制
发表时间：
1983
期刊：
影响因子：
--
通讯作者：
Johan Sundberg
中科院分区：
文献类型：
--
作者：
Johan Sundberg
发声产生的胸壁振动的起源，振幅和频谱方面进行了检查，在七个歌手。男性和女性歌手受试者的振动是通过小型加速度计采集的，加速度计固定在胸骨中心的皮肤上，为了比较，还固定在甲状软骨和喉部下方几厘米处的气管上。在影响胸壁振动的因素中，声门下压力振荡似乎是最重要的激励，而来自声带振动的机械冲击似乎是次要的。声门下和声上共鸣似乎有一定的影响。调查结果表明，这是声源，特别是其基本的振幅，这是反映在胸壁振动。只要基频低于约300 Hz，这些振动的振幅似乎就高于Pacinian感受器的振动感觉阈值。声源基频的幅度以及因此胸部振动的感觉随着发声沿着发声维度变化而显著变化，发声维度的范围从“按压/紧张/紧张”到“流动”到“呼吸”发声。由于这个原因，胸部振动的感觉似乎可以作为一种有用的非听觉信号，因此可以作为一种独立于房间的信号，用于发声的自主控制。
The chest wall vibrations generated by phonation were examined with respect to origin, amplitude, and spectrum in seven singers. The vibrations were picked up in male and female singer subjects by means of small accelerometers, which were fastened to the skin on the center of the sternum, and, for the purpose of comparison, on the thyroid cartilage and on the trachea a few cm below the larynx. Among the factors which influence the chest wall vibrations, the subglottal pressure oscillations seem to represent the most important excitation, while the mechanical shocks from the vocal fold vibrations seem secondary. Supra- and subglottal resonances seem moderately influential. The results of the investigation suggest that it is the voice source, particularly the amplitude of its fundamental, which is reflected in the chest wall vibrations. The amplitude of these vibrations seem to lie above the threshold of the Pacinian receptors for vibratory sensation as long as the fundamental frequency is below approximately 300 Hz. The amplitude of the voice source fundamental and hence the sensation of chest vibrations vary considerably as phonation is changed along the phonatory dimension which ranges from "pressed/tense/strained" through "flow" to "breathy" phonation. For this reason it seems likely that the sensation of chest vibrations can serve as a useful nonauditory and hence room-independent signal for the voluntary control of phonation.