Denoising of Fetal Phonocardiogram Signal by Wavelet TransformationIrmalia Suryani Faradisa, Ananda Ananda, Tri Arief Sardjono and Mauridhi Hery PurnomoE3S Web Conf., 188 (2020) 00013DOI: https://doi.org/10.1051/e3sconf/202018800013