Preliminary Study on Production of Coarse and Fine Crackles in Respiration Using a Model of Communication Theory
Journal
International Conference on Advanced Communication Technology, ICACT
Journal Volume
2020
Pages
461-464
Date Issued
2020
Author(s)
Abstract
This study described an original one-cycle sine wave passing the chest wall to be a coarse crackle or a fine crackle for the examination of the reason of the crackle formation. The results explain the differences between the definitions of crackle which were proposed by Sovijarvi et al. and Reichert et al. Lung sounds with crackles were synthesized by computer simulation. The results show that higher frequency (more than 100 Hz) carriers of bursts penetrate the equipollent bandpass filter of the chest wall directly while the coarse crackles occurred. Consequently, this communication system model supports the formation of normal lung sounds, wheezes, and crackles by the modulation theory and filter from the macro perspective.
Type
conference paper