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In this paper a new noninvasive method is proposed for automated estimation of fetal cardiac intervals from Doppler Ultrasound (DUS) signal and fetal electrocardiogram (fECG) as a reference. The proposed method is based on a combination of Wavelet analysis and hybrid Support Vector Machines-Hidden Markov Models (SVM/HMM). This method provides automated beat by beat identification of cardiac valves' opening and closing which are used to estimate the fetal cardiac intervals. The range of thesedblp:conf/cinc/MarzbanradKFSEI13 fatcat:23bgpter55g5binfoofpdvgcka