University of Illinois

Adam J Efron

Daniel Graupe

This disclosure relates to a self-adaptive noise cancellation system that may be employed in a noise environment at the vicinity of an acoustic noise source to produce noise signals denoted as anti-noise signals that are directed towards a geometric region of the same environment and which counter the first acoustic noise source thus rendering the geometric region relatively quiet. The system monitors the acoustic noise source to identify its signal parameters thus retrieving the noise parameters that are required for the device to tune itself in order to cope with variations in the parameters of the noise source and to adapt its own anti-noise output to keep adequate noise cancellation in said geometric region in the face of the changes in the characteristics of the noise source, such as changes in power or in frequency spectrum of the noise source.

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Chicago, IL, United States of America

Adam J Efron