Wireless speaker system with noise cancelation

• US 9,369,801 B2
• Filed: 01/24/2014
• Issued: 06/14/2016
• Est. Priority Date: 01/24/2014
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Corporation (Sony Group Corp.)
• Inventors: Carlsson, Gregory Peter, Zustak, Frederick J., Richman, Steven Martin, Milne, James R.
• Primary Examiner(s): Kim, Paul S
• Assistant Examiner(s): Yu, Norman
• Application Number:
  US14/163,089
• Publication Number:
  US 20150215699A1
• Time in Patent Office: 872 Days
• Field of Search: 381/71.1, 381/111, 381/17, 381/71.8, 381/80, 381/94.1, 381/94.2, 381/98
• US Class Current: 1/1
• CPC Class Codes: H04R 2227/001 Adaptation of signal processing in PA systems in dependence of presence of noise
• CPC Class Codes: H04R 2410/05 Noise reduction with a separate noise microphone
• CPC Class Codes: H04R 2420/07 Applications of wireless loudspeakers or wireless microphones
• CPC Class Codes: H04R 3/02 for preventing acoustic reaction , i.e. acoustic oscillatory feedback specially adapted for hearing aids H04R25/453
• CPC Class Codes: H04S 7/302 Electronic adaptation of stereophonic sound system to listener position or orientation H04S7/301 takes precedence

Abstract

A networked-speaker system which includes noise cancelling for active suppression of unwanted sounds. Feed-forward or feed-back cancelation can be used as appropriate for the location of the microphone sensing the noise.

Claims

1. A device comprising:

at least one computer memory that is not a transitory signal and that comprises instructions executable at least one processor for;

receiving a noise signal from at least one microphone;

receiving room information indicating wall configuration of a room in which multiple speakers are located;

receiving speaker location information indicating a location in the room of at least one speaker;

receiving listener location information indicating a target listener location;

based on at least the room information and listener location information, determining an amplitude and phase, at the target listener location, of noise represented by the noise signal at the target listener location; and

based on the room information, speaker location information, listener location information, and determination of the amplitude and phase of the noise at the target listener location, causing the at least one speaker to emit a noise cancelation signal calculated to have an amplitude equal to the amplitude of the noise at the target listener location and a phase opposite to the phase of the noise at the target listener location.

2. The device of claim 1, wherein the microphone is external to the room.

3. The device of claim 1, wherein the microphone is at the target listener location.

4. The device of claim 1, wherein the microphone is not at the target listener location.

5. The device of claim 4, wherein the instructions are executable for:

receiving microphone information indicating a location of the microphone; and

based on at least the room information, microphone information, and listener location information, determining an amplitude and phase of the noise at the target listener location.

6. The device of claim 1, wherein the instructions are executable for:

receiving the room information indicating configuration of a room in which multiple speakers are located from a user interface (UI).

7. The device of claim 1, wherein the instructions are executable for:

receiving the speaker location information indicating a location in the room of at least one speaker from a user interface (UI).

8. The device of claim 1, wherein the instructions are executable for:

receiving the listener location information indicating a target listener location from a user interface (UI).

9. Method comprising:

receiving a noise signal from at least one microphone;

receiving from a user interface (UI) room information indicating a wall configuration of a room in which multiple speakers are located;

receiving from a UI speaker location information indicating a location in the room of at least one speaker;

receiving from a UI listener location information indicating a target listener location;

based on at least the room information and listener location information, determining noise characteristics at the target listener location; and

based on the room information, speaker location information, listener location information, and determination of the noise characteristics at the target listener location, causing the at least one speaker to emit a noise cancelation signal calculated to substantially cancel the noise characteristics.

10. The method of claim 9, wherein the noise characteristics include an amplitude and phase of the noise at the target listener location and the noise cancelation signal is calculated to have an amplitude equal to the amplitude of the noise signal at the target listener location and a phase opposite to the phase of the noise signal at the target listener location.

11. The method of claim 9, wherein the microphone is at the target listener location.

12. The method of claim 9, wherein the microphone is not at the target listener location.

13. The method of claim 9, comprising:

receiving microphone information indicating a location of the microphone; and

based on at least the room information, microphone information, and listener location information, determining an amplitude and phase of the noise at the target listener location.

14. System comprising:

at least one computer readable storage medium bearing instructions executable by a processor which is configured for accessing the computer readable storage medium to execute the instructions to configure the processor for;

accessing a networked audio speaker system;

receiving at least a noise signal from a microphone;

receiving room information indicating a wall configuration of a room in which multiple speakers are located; and

based on the room information indicating configuration of the room, causing at least one speaker to emit a noise cancelation signal calculated to have sonic characteristics to cause destructive interference with the noise signal at a target listener location.

15. The system of claim 14, wherein the instructions further configure the processor for:

receiving speaker location information indicating a location in the room of at least one speaker;

receiving listener location information indicating a target listener location;

based on at least the room information and listener location information, determining an amplitude and phase, at the target listener location, of noise represented by the noise signal at the target listener location; and

based on the room information, speaker location information, listener location information, and determination of the amplitude and phase of the noise at the target listener location, causing the at least one speaker to emit a noise cancelation signal calculated to have an amplitude equal to the amplitude of the noise at the target listener location and a phase opposite to the phase of the noise at the target listener location.

16. The system of claim 15, wherein the microphone is at the target listener location.

17. The system of claim 15, wherein the microphone is not at the target listener location.

18. The system of claim 17, wherein the processor when executing the instructions is configured for:

receiving microphone information indicating a location of the microphone; and

based on at least the room information, microphone information, and listener location information, determining an amplitude and phase of the noise at the target listener location.

19. The system of claim 15, wherein the processor when executing the instructions receives the room information indicating configuration of a room in which multiple speakers are located from a user interface (UI).

20. The system of claim 15, wherein the processor when executing the instructions receives the speaker location information indicating a location in the room of at least one speaker from a user interface (UI).