A system and method for processing signals for the real-time detection of a functional cyclic activity, include: elements for simultaneously receiving signals acquired by a sensor array having at least two sensors elements for recording and preprocessing the acquired signals during a plurality of consecutive cycles elements for identifying event combinations from the recordings of the acquired signals, enabling a calibration to be carried out, including: elements for identifying a plurality of events in the acquired signals, each signal including an identified event elements for defining a model of the functional activity, consisting of a time order of the events and the mean delays between the events, and elements for defining a detection time window from the functional activity model.