Design Build Lung Sound Detection with Fast Fourier Transform (FFT) Analysis in Normal and Smoker Subjects

Abstract

Smoking disturbs health, this is a fact we can not avoid. Many diseases have been shown to be a bad result of smoking, either directly or indirectly. Even the World Health Organization (WHO) has warned that in the decade 2020-2030 tobacco will kill 10 million people per year, 70% of which occur in developing countries. Through the 1983 resolution, the World Health Organization (WHO) has established May 31st as World Tobacco Free Day every year.The output of this research is to design an instrument booster for lung sound detection and analyze lung noise by using FFT method on smokers and nonsmokers subject.In the signal of the smoker respondent shows with the same amplitude of its height with regular period, so the amplitude is 5mvp-p. After our signal analysis using FFT method the lung voice signal shows the same amplitude, At the same frequency between 0.5 Hz amplitude 5.8 mV. In non smoker respondents the signal shows with the same amplitude of its altitude with regular period, so the amplitude is 6mvp-p. After our signal analysis using the FFT method the lung voice signal shows different amplitude. At the same frequency between 0.5 Hz the amplitude is 11 mV.

Keywords: FFT, Lung Sound, Smokers and Non Smokers Respondents