单侧声带振动的远场声压研究  

Research on the far-field sound pressure model of unilateral vocal cord vibration

作　　者：赵晓[1] 曹辉[1] 徐晨[1] 

机构地区：[1]陕西师范大学应用声学研究所超声重点实验室,西安710100

出　　处：《声学技术》2013年第6期490-494,共5页Technical Acoustics

基　　金：国家自然科学基金(11074159);陕西师范大学研究生培养创新基金(2012CXS034)资助项目

摘　　要：根据单侧声带的生理结构和振动特性,提出单侧声带振动模型。运用声学基本理论,采用瑞利积分,计算了此单侧声带模型振动的远场声压分布,仿真数值计算了声压分布规律,并与正常声带模型辐射声场的声压进行比较。结果表明,在音频范围内,在声带空隙宽度相同的条件下,声压比值几乎不随方向角的改变而改变。而在方向角相同情况下,声压比值随着孔隙的增加呈线性下降。Based on the physical structure and the vibration characteristics of the unilateral vocal cords, this paper pro- posed a unilateral vocal cold vibration model. The far-field sound pressure distribution of the unilateral vocal cord vi- bration model was calculated on the usage of acoustic theory and Rayleigh Integral. The sound pressure distribution pattern was calculated by numerical simulation, which was compared with the sound pressure distribution of the normal vocal cold model in the radiated sound field. The results showed that the sound pressure ratio almost does not change with the change of the direction angle when the vocal cord gap width is identical in the audio frequency range. When the direction angle remains unchanged, the sound pressure ratio decreases linearly with the increase of pores.

关 键 词：单侧声带 远场声场 声压分布 

分 类 号：R767.92[医药卫生—耳鼻咽喉科]