A smartphone-based platform for analyzing physiological audio signals
The prevalence of smartphone devices lends itself to a development platform for an array of applications, including patient health tracking and physiological monitoring. This paper shows a preliminary investigation of the acquiring and processing breathing signals using a smartphone running the Android Operating System. The hardware consists of a smartphone connected to an analog electronic stethoscope. The preliminary signal analysis tool includes the Fast Fourier Transform implemented with the Android Software Development Kit (SDK).