IP Library › Granted Patent US 12,749,486
Granted Patent B2
US 12,749,486 · App. 18/787,400 · Granted Sep 29, 2026

Arbitration-based voice recognition

Inventors: Steven Beckhardt (Boston, MA); Ted Lin (Ayer, MA)
Assignee: Sonos, Inc.
G10L15/22G06F3/165G06F3/167G10L15/32G10L2015/088G10L2015/223G10L15/30H04R27/00H04R2227/003H04R2227/005
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Quick Facts
Patent No.
US 12,749,486
App. No.
18/787,400
Granted
Sep 29, 2026
Kind
B2
Abstract

A first network microphone device (NMD) is configured to receive, from a second NMD, a first arbitration message including (i) a first measure of confidence associated with a voice input detected by the second NMD and (ii) the voice input detected by the second NMD, and receive, from a third NMD, a second arbitration message including (i) a second measure of confidence associated with the voice input as detected by the third NMD and (ii) the voice input as detected by the third NMD. The first NMD is configured to determine that the second measure of confidence is greater than the first measure of confidence and based on the determination, perform voice recognition based on the voice input as detected by the third NMD, where the voice input includes a command to control audio playback by the first, second, and/or third NMD, and after performing voice recognition, executing the command.

Claims (49)

1 . A first playback device comprising:

at least one processor;

at least one non-transitory computer-readable medium; and

program instructions stored on the at least one non-transitory computer-readable medium that, when executed by the at least one processor, cause the first playback device to:

detect a voice input via at least one microphone of the first playback device, the voice input comprising a command to control playback of audio content by at least one of the first playback device or a second playback device;

determine a first measure of confidence associated with the voice input as detected by the first playback device;

receive, from the second playback device, an arbitration message comprising a second measure of confidence associated with the voice input as detected by the second playback device;

determine that the second measure of confidence is greater than the first measure of confidence;

receive, from the second playback device, the voice input as detected by the second playback device;

based on the determination that the second measure of confidence is greater than the first measure of confidence, perform voice recognition based on the voice input as detected by the second playback device; and

after performing the voice recognition based on the voice input as detected by the second playback device, execute the command to control playback of audio content by at least one of the first playback device or the second playback device.

2 . The first playback device of claim 1 , wherein the arbitration message further comprises voice data that is based on the voice input as detected by the second playback device, and wherein the program instructions that, when executed by the at least one processor, cause the first playback device to perform the voice recognition comprise program instructions that, when executed by the at least one processor, cause the first playback device to:

transmit a voice message that comprises the voice data to a cloud-based server via a network for voice processing.

3 . The first playback device of claim 2 , wherein the voice message is a first voice message, and wherein the arbitration message further comprises a value indicating an interval of time that the second playback device will wait before transmitting, to the cloud-based server, a second voice message that is based on the voice input as detected by the second playback device.

4 . The first playback device of claim 1 , wherein the arbitration message further comprises voice data that is indicative of a wakeword.

5 . The first playback device of claim 1 , further comprising program instructions stored on the at least one non-transitory computer-readable medium that, when executed by the at least one processor, cause the first playback device to:

after performing the voice recognition based on the voice input as detected by the second playback device, cause the second playback device to play back a voice response to the voice input.

6 . The first playback device of claim 1 , wherein the arbitration message further comprises a header that comprises (i) voice data that is based on the voice input as detected by the second playback device, (ii) an identifier associated with a source of the voice input as detected by the second playback device, and (iii) a timestamp value indicating a time at which the arbitration message was transmitted by the second playback device.

7 . The first playback device of claim 1 , wherein the program instructions that, when executed by the at least one processor, cause the first playback device to execute the command to control playback of audio content comprise program instructions that, when executed by the at least one processor, cause the first playback device to execute the command to control playback of audio content by playing back a first audio channel of the audio content in synchrony with playback of a second audio channel of the audio content by the second playback device.

8 . The first playback device of claim 1 , wherein the voice input further comprises a wakeword.

9 . A non-transitory computer-readable medium, wherein the non-transitory computer-readable medium is provisioned with program instructions that, when executed by at least one processor, cause a first playback device to:

detect a voice input via at least one microphone of the first playback device, the voice input comprising a command to control playback of audio content by at least one of the first playback device or a second playback device;

determine a first measure of confidence associated with the voice input as detected by the first playback device;

receive, from the second playback device, an arbitration message comprising a second measure of confidence associated with the voice input as detected by the second playback device;

determine that the second measure of confidence is greater than the first measure of confidence;

receive, from the second playback device, the voice input as detected by the second playback device;

based on the determination that the second measure of confidence is greater than the first measure of confidence, perform voice recognition based on the voice input as detected by the second playback device; and

after performing the voice recognition based on the voice input as detected by the second playback device, execute the command to control playback of audio content by at least one of the first playback device or the second playback device.

10 . The non-transitory computer-readable medium of claim 9 , wherein the arbitration message further comprises voice data that is based on the voice input as detected by the second playback device, and wherein the program instructions that, when executed by the at least one processor, cause the first playback device to perform the voice recognition comprise program instructions that, when executed by the at least one processor, cause the first playback device to:

transmit a voice message that comprises the voice data to a cloud-based server via a network for voice processing.

11 . The non-transitory computer-readable medium of claim 10 , wherein the voice message is a first voice message, and wherein the arbitration message further comprises a value indicating an interval of time that the second playback device will wait before transmitting, to the cloud-based server, a second voice message that is based on the voice input as detected by the second playback device.

12 . The non-transitory computer-readable medium of claim 9 , wherein the arbitration message further comprises voice data that is indicative of a wakeword.

13 . The non-transitory computer-readable medium of claim 9 , wherein the non-transitory computer-readable medium is also provisioned with program instructions that, when executed by the at least one processor, cause the first playback device to:

after performing the voice recognition based on the voice input as detected by the second playback device, cause the second playback device to play back a voice response to the voice input.

14 . The non-transitory computer-readable medium of claim 9 , wherein the arbitration message further comprises a header that comprises (i) voice data that is based on the voice input as detected by the second playback device, (ii) an identifier associated with a source of the voice input as detected by the second playback device, and (iii) a timestamp value indicating a time at which the arbitration message was transmitted by the second playback device.

15 . The non-transitory computer-readable medium of claim 9 , wherein the program instructions that, when executed by the at least one processor, cause the first playback device to execute the command to control playback of audio content comprise program instructions that, when executed by the at least one processor, cause the first playback device to execute the command to control playback of audio content by playing back a first audio channel of the audio content in synchrony with playback of a second audio channel of the audio content by the second playback device.

16 . The non-transitory computer-readable medium of claim 9 , wherein the voice input further comprises a wakeword.

17 . A method implemented by a first playback device, the method comprising:

detecting a voice input via at least one microphone of the first playback device, the voice input comprising a command to control playback of audio content by at least one of the first playback device or a second playback device;

determining a first measure of confidence associated with the voice input as detected by the first playback device;

receiving, from the second playback device, an arbitration message comprising a second measure of confidence associated with the voice input as detected by the second playback device;

determining that the second measure of confidence is greater than the first measure of confidence;

receiving, from the second playback device, the voice input as detected by the second playback device;

based on the determination that the second measure of confidence is greater than the first measure of confidence, performing voice recognition based on the voice input as detected by the second playback device; and

after performing the voice recognition based on the voice input as detected by the second playback device, executing the command to control playback of audio content by at least one of the first playback device or the second playback device.

18 . The method of claim 17 , wherein the arbitration message further comprises voice data that is based on the voice input as detected by the second playback device, and wherein performing the voice recognition comprises:

transmitting a voice message that comprises the voice data to a cloud-based server via a network for voice processing.

19 . The method of claim 18 , wherein the voice message is a first voice message, and wherein the arbitration message further comprises a value indicating an interval of time that the second playback device will wait before transmitting, to the cloud-based server, a second voice message that is based on the voice input as detected by the second playback device.

20 . The method of claim 17 , wherein the arbitration message further comprises voice data that is indicative of a wakeword.

Assignments (2)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 6, 2026
From: BECKHARDT, STEVEN; LIN, TED
To: SONOS, INC.
Reel/Frame 074289/0788 →
SECURITY INTEREST Recorded Jan 30, 2026
From: SONOS, INC.
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 074533/0615 →
Continuity (6)
Continuation 18449254 · Aug 14, 2023
Continuation 17722438 · Apr 18, 2022
Continuation 16841116 · Apr 6, 2020
Continuation 16178122 · Nov 1, 2018
Continuation 15297627 · Oct 19, 2016
Related Publication 20250037714A1 · Jan 30, 2025
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