1. A computer-based detection method employable with a sleeping subject for aiding in the differential-character diagnosis and treatments of apneic events comprising: gathering heart-sound data, including S 1 data and S 2 data; performing, in a continuous manner, and over a selected time period, a combined time-frequency-intensity (TFI) analysis, of the gathered data; and based on said performing and the performed TFI analysis, producing an output which is indicative of the presence and character of any detected apneic event.