METHOD FOR DETECTING TRANSIENT SIGNALS, PARTICULARLY IN ACOUSTIC SIGNALS

摘要

The invention relates to methods allowing to detect in a continuous acoustic signal impulse acoustic signals. It provides for the determination of parameters (ai) of a filter by apprenticeship (109) by means of modeling by linear self-regressive prediction. Said parameters are then applied to a filter either of the adapted average type (110) or of the self-regressive type (111.1), which receives the reception signals and delivers a signal comprising a low level continuous portion and a high level impulse portion which represents the signals to be detected. Alternatively, a plurality of self-regressive filters (111.1)-(111.n) arranged in series may be used. The invention facilitates the detection of engine breakdowns.