Hybrid active noise control
First Claim
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.
1 Assignment
0 Petitions
Accused Products
Abstract
A technique for reducing noise in a listening environment. The technique includes dividing the listening environment into a plurality of zones, where each zone is associated with a different active noise cancellation (ANC) system. A boundary between a first zone included in the plurality of zones and a second zone included in the plurality of zones comprises open space. The technique further includes assigning a plurality of acoustic sensors and a plurality of speakers to the ANC system associated with each zone included in the plurality of zones. The technique further includes, for each zone included in the plurality of zones, acquiring acoustic data via the plurality of acoustic sensors, processing the acoustic data, via a processor, to generate noise cancellation signals, and outputting the noise cancellation signals via the plurality of speakers.
10 Citations
21 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method for reducing noise in a listening environment, the method comprising:
-
dividing the listening environment into a plurality of zones, wherein each zone is associated with a different active noise cancellation (ANC) system, and a boundary between a first zone included in the plurality of zones and a second zone included in the plurality of zones comprises open space; assigning a plurality of acoustic sensors and a plurality of speakers to the ANC system associated with each zone included in the plurality of zones; and for each zone included in the plurality of zones; acquiring acoustic data via the plurality of acoustic sensors; processing the acoustic data, via a processor, to generate noise cancellation signals; and outputting the noise cancellation signals via the plurality of speakers, wherein a first ANC system is configured to reduce noise in the first zone of the listening environment independently of a second ANC system configured to reduce noise in the second zone of the listening environment, 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. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A vehicle, comprising:
-
a passenger compartment comprising a plurality of zones, wherein a boundary between a first zone included in the plurality of zones and a second zone included in the plurality of zones comprises open space; a plurality of active noise cancellation (ANC) systems, each ANC system associated with a different zone of the passenger compartment, and each ANC system comprising; a plurality of acoustic sensors configured to acquire acoustic data; a plurality of speakers configured to output noise cancellation signals; and a processor coupled to the plurality of acoustic sensors and the plurality of speakers and configured to; receive the acoustic data via the plurality of acoustic sensors; process the acoustic data to generate the noise cancellation signals; and transmit the noise cancellation signals to the plurality of speakers, wherein a first ANC system is configured to reduce noise in the first zone of the passenger compartment independently of a second ANC system configured to reduce noise in the second zone of the passenger compartment, 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. - View Dependent Claims (21)
-
Specification