Fetus Heart Beat Extraction from Mother's PCG Using Blind Source Separation

Abstract

Fetal monitoring through phonocardiography is non-invasive and very challenging technique. It is very crucial to know about the fetus heart status. Extraction of fetus heart beat from mother heart sound is very challenging and difficult task due to the presence of additional sounds like mother organ sound, mother respiration and external noises. Benchmarked datasets and literature are also not available. In this research we extract fetus heart beat from mother beat using Blind source separation technique like STFT. Shiraz University Fetal Heart Sounds Database of Physionet has been used. 92 maternal heart sounds are used. It can be seen that the algorithm well separates the mixed source into maternal and fetal heart sounds.