使用定制头部和躯干模拟器测量躯干、嘴唇和声道结构对言语指向性的影响

IF 1 3区 物理与天体物理 Q4 ACOUSTICS Acta Acustica Pub Date : 2023-01-01 DOI:10.1051/aacus/2023035
R. Blandin, Jingyan Geng, P. Birkholz
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引用次数: 0

摘要

人的声音是一种定向声源。这一特性已经被探索了200多年,主要是通过对人类参与者的测量。已经做出了一些努力来了解影响言语指向性的解剖学参数,例如,张嘴、衍射和由头部和躯干、嘴唇和声道引起的反射。然而,这些参数大多是单独研究的,没有集成到一个完整的模型或复制品中。这项工作的目的是研究躯干,嘴唇和声道几何形状对言语指向性的综合影响。为此,建立了一个简化的头部和躯干模拟器;这个模拟器使独立地改变这些参数成为可能。它由代表头部和躯干的两个球体组成,有嘴唇或没有嘴唇的声道复制品可以插入其中。指向性模式是在一个带有转盘和麦克风的消声室中测量的,麦克风可以放置在不同的角度位置。不同的影响,如躯干衍射和反射,嘴巴尺寸与方向性的相关性,高阶模式和方向性增加由于嘴唇被证实并进一步记录。发现了不同参数之间的相互作用。观察到,躯干衍射和反射由于嘴唇的存在而增强,它们可以被高阶模式的影响修改或掩盖,并且嘴唇倾向于衰减高阶模式的影响。
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Investigation of the influence of the torso, lips and vocal tract configuration on speech directivity using measurements from a custom head and torso simulator
The human voice is a directional sound source. This property has been explored for more than 200 years, mainly using measurements of human participants. Some efforts have been made to understand the anatomical parameters that influence speech directivity, e.g., the mouth opening, diffraction and reflections due to the head and torso, the lips and the vocal tract. However, these parameters have mostly been studied separately, without being integrated into a complete model or replica. The aim of this work was to study the combined influence of the torso, the lips and the vocal tract geometry on speech directivity. For this purpose, a simplified head and torso simulator was built; this simulator made it possible to vary these parameters independently. It consisted of two spheres representing the head and the torso into which vocal tract replicas with or without lips could be inserted. The directivity patterns were measured in an anechoic room with a turntable and a microphone that could be placed at different angular positions. Different effects such as torso diffraction and reflections, the correlation of the mouth dimensions with directionality, the higher-order modes and the increase in directionality due to the lips were confirmed and further documented. Interactions between the different parameters were found. It was observed that torso diffraction and reflections were enhanced by the presence of the lips, that they could be modified or masked by the effect of higher-order modes and that the lips tend to attenuate the effect of higher-order modes.
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来源期刊
Acta Acustica
Acta Acustica ACOUSTICS-
CiteScore
2.80
自引率
21.40%
发文量
0
审稿时长
12 weeks
期刊介绍: Acta Acustica, the Journal of the European Acoustics Association (EAA). After the publication of its Journal Acta Acustica from 1993 to 1995, the EAA published Acta Acustica united with Acustica from 1996 to 2019. From 2020, the EAA decided to publish a journal in full Open Access. See Article Processing charges. Acta Acustica reports on original scientific research in acoustics and on engineering applications. The journal considers review papers, scientific papers, technical and applied papers, short communications, letters to the editor. From time to time, special issues and review articles are also published. For book reviews or doctoral thesis abstracts, please contact the Editor in Chief.
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