Analysis of Deformities in Lung Using Short Time Fourier Transform Spectrogram Analysis on Lung Sound

The lung itself cannot generate sound if there is no airflow, pressure differences between structures within the thorax. Listening and interpreting lung sounds by a stethoscope had been an important component of screening and diagnosing lung diseases. However this practice has always been vulnerable to poor audibility, inter-observer variations (between different physicians) and poor reproducibility. Lung sound consists of two main types of sound Basic Lung sound and adventitious sound. The timing, repeatability, and shape of crackles are important parameters for diagnosis. In this paper we aim at automatic analysis of lung sounds for wheeze and crackle detection and classification.