Patent ID: 11154905

Abstract:
A system may include a vibrating surface, a first mechanical transducer mechanically coupled to the vibrating surface, a second mechanical transducer mechanically coupled to the vibrating surface at a location different than that of the first mechanical transducer, a first signal path for driving the first mechanical transducer, wherein the first signal path comprises a first amplifier and a first filter having a first frequency response, a second signal path for driving the second mechanical transducer, wherein the second signal path comprises a second amplifier and a second filter having a second frequency response, and a control subsystem. The control subsystem may include an analysis block configured to cross-correlate a first vibrational energy at a first location of the vibrating surface with a second vibrational energy at a second location of the vibrating surface and a coefficient control block configured to adaptively modify at least one of the first frequency response and the second frequency response responsive to cross-correlation of the first vibrational energy and the second vibrational energy in order to maximize differences between the first vibrational energy and the second vibrational energy.