基于声门下嗓音源的肺胸系统声传递特征研究

摘要

In this paper,according to the physiology and biophysicsprinciple of voice and respiratory system,physical model of transmitted sound about the generation and transmission in sub-glottal vocal tract and lung-thorax system is presented.Using the method of complex cepstrum,the sub-glottal voice source is obtained from the transmitted sound of V-slot below neck.It is an excellent method of obtaining sub-glottal source.According to the physical model,the acoustic transmission characteristics of lung-thorax system are investigated from the sub-glottal voice source and the recored transmitted sound in various locations on the chest wall.Experimental results show that it is a good way of studying sound transfer function of lung-thorax system.%本文根据嗓音—呼吸系统生理及生物物理原理，提出了传导语音产生及在下声道和肺胸系统传播的物理模型，在胸前颈下V型槽处记录传导语音并利用复倒谱技术提取声门下嗓音源，可以看出它非常有效地提取了声门下嗓音源，根据所提出的模型、提取的声门下嗓音源和胸壁记录的传导语音,研究肺胸系统的声传递特征，从结果可以看出该方法是研究肺胸系统声传递特征函数的一种有效方法。