Method for cancelling unwanted loudspeaker signals

R.M. Aarts (Uitvinder), D.W.E. Schobben (Uitvinder)

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In a method for canceling unwanted signals from at least one external sound source, such as a loudspeaker, by means of headphones provided with microphones, at least known sound signals from the at least one external sound source are compensated by anti-phase sound signals. These sound signals simulate the at least known sound signals from said at least one external sound source in anti-phase. Said anti-phase sound signals are generated in the headphones in response to signals derived from audio input signals of the at least one external sound source in a filter device which is controlled by the resulting microphone signals.
Originele taal-2Engels
OctrooinummerUS7474754
StatusGepubliceerd - 6 jan 2009

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Aarts, R. M., & Schobben, D. W. E. (2009). Method for cancelling unwanted loudspeaker signals. (Octrooi Nr. US7474754).