Imaging of Heart Acoustic Based on the Sub-space Methods Using a Microphone Array

Heart sounds are mostly generated by acceleration or deceleration of blood in a cardiac cycle; while, heart murmurs are generated by the turbulence of blood whileand after passing the cardiac valves [1, 2]. During a Phonocardiogram (PCG) cycle, the S1 and S2 segments are two main parts produced by the closures of the involved cardiac valves [3, 4]. The heart sounds and murmurs are relatively weak signals in the frequency range of 0.1-2000 Hz, while a part of their low frequency bound is not in the audibility range [1].
Source: Computer Methods and Programs in Biomedicine - Category: Bioinformatics Authors: Source Type: research