1. A method for determining cardiac parameters of a subject, comprising: receiving a signal from a thoracocardiograph (TCG) sensor, the signal being sensitive to positions and/or motions of an anterior chest wall of the subject, and the signal comprising a cardiac component, a respiratory component, and noise and/or artifact components; receiving one or more electrocardiogram (ECG) signals; filtering the received TCG signal such that one or more of the respiratory component and the noise and/or artifact components in the received TCG signal are reduced, the filtering comprising one or more of wavelet de-noising, non-linear filtering, and state space filtering; ensemble averaging the filtered TCG signal such that a respiratory component remaining in the filtered TCG signal is reduced, ensemble members being triggered by occurrence of one or more selected fiducial points determined in the ECG signal; and extracting parameters of cardiac functioning from the ensemble averaged signal.