Methods for determining relative locations of wireless loudspeakers

Patent metadata

Field	Value
Publication number	US-10003903-B2
Application number	US-201615242218-A
Country	US
Kind code	B2
Filing date	Aug 19, 2016
Priority date	Aug 21, 2015
Publication date	Jun 19, 2018
Grant date	Jun 19, 2018

Abstract

Methods, systems, and apparatuses are described for determining relative locations of wireless loudspeakers and performing channel mapping thereof. An audio processing component utilizes sounds produced by wireless loudspeakers during setup/installation procedures, which are received by a microphone at locations in an acoustic space, to determine an amount of time between when the audio signal is initially transmitted and when the microphone signal is received. The audio processing component also utilizes wireless timing signals provided by a wireless transceiver, at locations in the acoustic space, to wireless loudspeakers and then back to the wireless transceiver to determine an amount of time between transmission and reception by the wireless transceiver. The timing delays are used to determine the locations of the wireless loudspeakers in the acoustic space. Based on the determined locations, the audio processing component generates indications of correct or incorrect wireless loudspeaker placements, and performs audio channel mapping.

First claim

What is claimed is:

1. A system comprising:
a plurality of wireless loudspeakers for an acoustic space, each configured to:
receive wireless audio transmission signals and produce a corresponding sound;
receive wireless timing transmission signals; and
transmit responsive wireless timing transmission signals in response to receiving the wireless timing transmission signals; and

an audio processing component comprising:
a wireless transceiver configured to:
provide the wireless audio transmission signals;
provide the wireless timing transmission signals to each of the plurality of wireless loudspeakers; and
receive the responsive wireless timing transmission signal that includes timing information from each of the plurality of wireless loudspeakers;

at least one microphone configured to:
receive the corresponding sound of each of the plurality of wireless loudspeakers at a plurality of microphone positions in the acoustic space; and
generate a corresponding microphone signal for each of the plurality of microphone positions for determining a corresponding wireless loudspeaker location;

a location determination component configured to:
determine a location in the acoustic space of one or more of the plurality of wireless loudspeakers based on one or more of the corresponding microphone signals at the plurality of microphone positions and the timing information; and

at least one of:
a channel mapping component configured to determine a channel mapping of the plurality of wireless loudspeakers based on the location; or
a location indication component configured to generate and provide a location indication, the location indication being indicative of whether a loudspeaker of the plurality of wireless loudspeakers is properly located based on the location.

2. The system of claim 1 , wherein the at least one microphone and the channel mapping component are configured to setup or calibrate the plurality of wireless loudspeakers, at least in part, according to an active room correction scheme.

3. The system of claim 1 , wherein the wireless transceiver is configured to:
provide the wireless timing transmission signals to each of the plurality of wireless loudspeakers and receive the responsive wireless timing transmission signal that includes timing information from each of the plurality of wireless loudspeakers at a plurality of positions in the acoustic space.

4. The system of claim 3 , wherein the wireless transceiver is configured to receive the responsive wireless timing transmission signals according to a 2-D loudspeaker configuration or according to a 3-D loudspeaker configuration.

5. The system of claim 1 , wherein the wireless transceiver is configured to transmit wireless timing transmission signals according to the IEEE 1588 and IEEE 802.1AS point-to-point protocol standards.

6. The system of claim 1 , wherein the location indication comprises at least one of an audio indication or a visual indication; or
wherein the location indication comprises at least one of an audio indication or a visual indication that provides corrective location information for a wireless loudspeaker of the plurality of wireless loudspeakers.

7. The system of claim 1 , wherein an additional wireless transceiver is included in one or more of the plurality of wireless loudspeakers, and is configured to:
provide additional wireless timing transmission signals to each other wireless loudspeaker of the plurality of wireless loudspeakers; and
receive additional responsive wireless timing transmission signals that include additional timing information from each other wireless loudspeaker of the plurality of wireless loudspeakers; and
wherein the location determination component is configured to determine the location based on the additional timing information.

8. The system of claim 1 , wherein a location of a loudspeaker of the plurality of loudspeakers is determined according to at least one corresponding microphone signal and at least one instance of location information.

9. A system comprising:
a wireless transceiver configured to:
provide wireless timing transmission signals to each of a plurality of wireless loudspeakers for an acoustic space; and
receive a responsive wireless timing transmission signal that includes timing information from each of the plurality of wireless loudspeakers;

a location determination component configured to:
determine a location in the acoustic space of one or more of the plurality of wireless loudspeakers based on the timing information; and

at least one of:
a channel mapping component configured to determine a channel mapping of the plurality of wireless loudspeakers based on the location; or
a location indication component configured to generate and provide a location indication, the location indication being indicative of whether a loudspeaker of the plurality of wireless loudspeakers is properly located based on the location.

10. The system of claim 9 , wherein the wireless transceiver is configured to:
provide the wireless timing transmission signals to each of the plurality of wireless loudspeakers in the acoustic space, and receive the responsive wireless timing transmission signal from each of the plurality of wireless loudspeakers, at a plurality of positions in the acoustic space.

11. The system of claim 9 , wherein the location indication comprises at least one of an audio indication or a visual indication, or
wherein the location indication comprises at least one of an audio indication or a visual indication that provides corrective location information for a wireless loudspeaker of the plurality of wireless loudspeakers.

12. The system of claim 9 , wherein the location determination component is configured to determine the location according to a 2-D loudspeaker configuration or according to a 3-D loudspeaker configuration.

13. The system of claim 9 , wherein the wireless transceiver is configured to transmit and receive wireless location transmission signals according to the IEEE 1588 and IEEE 802.1AS point-to-point protocol standards.

14. The system of claim 9 , wherein an additional wireless transceiver is included in one or more of the plurality of wireless loudspeakers, and is configured to:
provide additional wireless timing transmission signals to each other wireless loudspeaker of the plurality of wireless loudspeakers and to the wireless transceiver; and
receive additional responsive wireless timing transmission signals that include additional timing information from each other wireless loudspeaker of the plurality of wireless loudspeakers and from the wireless transceiver.

15. The system of claim 14 , wherein the location determination component is configured to determine the location based on the additional timing information.

16. A method comprising:
providing wireless timing transmission signals to each of a plurality of wireless loudspeakers for an acoustic space; and
receiving a responsive wireless timing transmission signal that includes timing information from each of the plurality of wireless loudspeakers;
determining a location in the acoustic space of one or more of the plurality of wireless loudspeakers based on the timing information; and
at least one of:
determining a channel mapping of the plurality of wireless loudspeakers based on the location; or
generating and providing a location indication, the location indication being indicative of whether a loudspeaker of the plurality of wireless loudspeakers is properly located based on the location.

17. The method of claim

Assignees

• Avago Technologies General Ip

Inventors

• Dougherty James
• Chen Juin-Hwey

Classifications

• H04S7/301 Primary

  Automatic calibration of stereophonic sound system, e.g. with test microphone · CPC title

• H04R5/02

  Spatial or constructional arrangements of loudspeakers · CPC title

• H04S7/302

  Electronic adaptation of stereophonic sound system to listener position or orientation (H04S7/301 takes precedence) · CPC title

• H04R2420/07

  Applications of wireless loudspeakers or wireless microphones · CPC title

• H04R2205/024

  Positioning of loudspeaker enclosures for spatial sound reproduction · CPC title