THE STUDY ON ACOUSTIC TRANSMISSION CHARACTERISTICSOF LUNG-THORAX SYSTEM BASED ON SUB-GLOTTAL VOICE SOURCE
基于声门下嗓音源的肺胸系统声传递特征研究

In this paper, according to the physiology and biophysics principle 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.