Analysis of Acoustic Parameters from Respiratory Signal in COPD and Pneumonia patients

In this paper, a statistical analysis is performed for many parameters such as Harmonic to Nois Ratio (HNR),Pitch and Amplitude Perturbation (jitter and shimmer) was applied to compare between them in different cases from the respiratory signal. COPD and Pneumonia are a kind of pulmonary diseases which affects the respiratory signal. Respiratory sounds is non-stationary, non-linear and complex signals. The purpose of this work is acoustic features extraction using PRAAT software v6.0.43 from the respiratory signal. In order to evaluate these features, the mean and standard deviation are calculated and presented. However, in our study we found the Intensity value to be 66.42, 76.58 and 71.96 for the healthy, COPD and Pneumonia patients respectively, The Jitter(s) values obtained for the healthy, COPD and Pneumonia patients as 101.03, 174.40 and 173.45 respectively. Our results show the significantly increased values in COPD and Pneumonia patients compared to healthy subjects.