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Hybrid active noise control

  • US 10,440,480 B2
  • Filed: 04/06/2016
  • Issued: 10/08/2019
  • Est. Priority Date: 04/06/2016
  • Status: Active Grant
First Claim
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1. A system for reducing noise in a listening environment, the system comprising:

  • a first active noise cancellation (ANC) system associated with a first zone of the listening environment, the first ANC system comprising;

    a first plurality of acoustic sensors configured to acquire first acoustic data;

    a first plurality of speakers configured to output first noise cancellation signals; and

    a first processor coupled to the first plurality of acoustic sensors and the first plurality of speakers and configured to;

    receive the first acoustic data via the first plurality of acoustic sensors;

    process the first acoustic data to generate the first noise cancellation signals; and

    transmit the first noise cancellation signals to the first plurality of speakers; and

    a second ANC system associated with a second zone of the listening environment, wherein the first zone and the second zone share a boundary within a continuous volume of the listening environment, the second ANC system comprising;

    a second plurality of acoustic sensors configured to acquire second acoustic data;

    a second plurality of speakers configured to output second noise cancellation signals; and

    a second processor coupled to the second plurality of acoustic sensors and the second plurality of speakers and configured to;

    receive the second acoustic data via the second plurality of acoustic sensors;

    process the second acoustic data to generate the second noise cancellation signals; and

    transmit the second noise cancellation signals to the second plurality of speakers,wherein the first ANC system is configured to reduce noise in the first zone of the listening environment independently of the second ANC system and each of the first zone and the second zone includes a plurality of different acoustic modes within the listening environment, wherein each acoustic mode exceeds a threshold loudness within a predetermined frequency range.

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