菱形声带振动模型远场声场特性研究  

Research on Characteristics of Far-field Sound Field of the Diamond Model of 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,陕西西安710100

出　　处：《压电与声光》2013年第1期29-32,共4页Piezoelectrics & Acoustooptics

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

摘　　要：根据声带的生理结构和振动特性,提出用换能器来模拟声带振动。依据活塞声源辐射声场研究特性,提出中间开孔的菱形声带的振动模型,运用声学基本理论,采用瑞利积分法计算了声带模型振动的远场声压分布及指向性公式,仿真数值计算了声压分布规律,并分析了此声带模型辐射声场的指向性。结果表明,在音频范围内,声带宽度相同时,即在改变模型空隙宽度条件下,此声带模型声源的辐射远场声压分布与理论相符。According to the physical structure of the vocal cords and the vibration characteristics, transducer is proposed to simulate the vocal cold vibration; and according to the study of radiation sound field characteristics, the middle hole of the vocal cord vibration model of diamond is also proposed. Based on the acoustics theory and Reily-integration, the model of vocal cord vibration far field sound pressure distribution and the directivity formula are calculated;pressure distribution is calculated by numerical simulation,atad the vocal cord model radiation sound field directivity is analyzed. The results show that in the audio frequency range and at the width of the same vocal condition, even on the condition of changing the model of gap width, the vocal fold model radiated far field sound pressure distribution are consistent with the theory.

关 键 词：菱形声带 远场分析 声压分布 

分 类 号：R767.92[医药卫生—耳鼻咽喉科]