Playback device configuration

• US 10,791,407 B2
• Filed: 12/13/2019
• Issued: 09/29/2020
• Est. Priority Date: 03/17/2014
• Status: Active Grant

• Current Assignee: Sonos, Inc.
• Original Assignee: Sonon Incorporated
• Inventors: Oishi, Tetsuro, Bush, William H
• Primary Examiner(s): Holder, Regina N
• Application Number:
  US16/713,858
• Publication Number:
  US 20200196077A1
• Time in Patent Office: 291 Days
• CPC Class Codes: G06F 3/165 Management of the audio stream, e.g. setting of volume, audio stream path
• CPC Class Codes: H04R 1/323 for loudspeakers H04R1/34 and H04R1/40 take precedence
• CPC Class Codes: H04R 2227/001 Adaptation of signal processing in PA systems in dependence of presence of noise
• CPC Class Codes: H04R 2227/003 Digital PA systems using, e.g. LAN or internet
• CPC Class Codes: H04R 2227/005 Audio distribution systems for home, i.e. multi-room use
• CPC Class Codes: H04R 2420/03 Connection circuits to selectively connect loudspeakers or headphones to amplifiers
• CPC Class Codes: H04R 2430/03 Synergistic effects of band splitting and sub-band processing
• CPC Class Codes: H04R 2499/13 Acoustic transducers and sound field adaptation in vehicles
• CPC Class Codes: H04R 27/00 Public address systems circuits for preventing acoustic reaction H04R3/02; circuits for distributing signals to loudspeakers H04R3/12; monitoring or testing arrangements for public address systems H04R29/007; amplifiers H03F
• CPC Class Codes: H04R 29/001 for loudspeakers H04R29/007 takes precedence
• CPC Class Codes: H04R 29/002 Loudspeaker arrays
• CPC Class Codes: H04R 29/007 for public address systems public address systems per se H04R27/00
• CPC Class Codes: H04R 3/04 for correcting frequency response
• CPC Class Codes: H04R 3/12 for distributing signals to two or more loudspeakers specially adapted for hearing aids H04R25/407
• CPC Class Codes: H04R 5/04 Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments combinations of amplifiers H03F3/68; stereophonic systems H04S
• CPC Class Codes: H04S 2400/01 Multi-channel, i.e. more than two input channels, sound reproduction with two speakers wherein the multi-channel information is substantially preserved
• CPC Class Codes: H04S 2420/07 Synergistic effects of band splitting and sub-band processing
• CPC Class Codes: H04S 7/307 Frequency adjustment, e.g. tone control H04S7/301 takes precedence

Abstract

Examples described herein involve configuring a playback device based on distortion, such as that caused by a barrier. One implementation may involve causing the playback device to play audio content according to an existing playback configuration, determining an existing frequency response of the playback device in a given system, and determining whether a difference between the existing frequency response of the playback device in the given system and a predetermined frequency response for the playback device is greater than a predetermined distortion threshold. If it is determined that the difference between the existing frequency response of the playback device and the predetermined frequency response for the playback device is greater than the predetermined distortion threshold, then the existing playback configuration of the playback device is changed to an updated playback configuration of the playback device and the playback device plays audio content according to the updated playback configuration.

Claims

1. A playback device comprising:

one or more microphones;

one or more speakers;

one or more amplifiers configured to drive the one or more speakers;

one or more processors; and

a housing carrying the one or more microphones, the one or more speakers, the one or more amplifiers, the one or more processors, and data storage storing instructions that when executed by the one or more processors cause the playback device to perform functions comprising;

while playing back first audio content via the one or more amplifiers and the one or more speakers, performing a first calibration of the playback device, wherein performing the first calibration comprises;

(i) recording first audio via the one or more microphones to capture playback of the first audio content by the playback device; and

(ii) based on the recorded first audio, determining a first playback configuration that at least partially offsets acoustic characteristics of an environment surrounding the playback device; and

(iii) applying the first playback configuration to the playback device;

while playing back second audio content via the one or more amplifiers and the one or more speakers, detecting an event corresponding to a change in the environment surrounding the playback device; and

based on detecting the event, performing a second calibration of the playback device, wherein performing the second calibration comprises;

(i) recording second audio via the one or more microphones to capture playback of the second audio content by the playback device;

(ii) based on the recorded second audio, determining a second playback configuration that at least partially offsets acoustic characteristics of the environment surrounding the playback device; and

(iii) applying the second playback configuration to the playback device.

2. The playback device of claim 1, wherein the playback device further comprises one or more sensors carried by the housing, and wherein detecting the event corresponding to the change in the environment comprises:

detecting, via the one or more sensors, sensor data indicating the change in the environment surrounding the playback device.

3. The playback device of claim 2, wherein the one or more sensors comprise a proximity sensor, and wherein detecting the sensor data indicating the change in the environment surrounding the playback device comprises detecting one or more barriers in proximity to the playback device.

4. The playback device of claim 1, wherein detecting the event corresponding to the change in the environment comprises:

detecting, via the one or more microphones, a change in acoustic response of the environment.

5. The playback device of claim 4, wherein detecting, via the one or more microphones, the change in acoustic response of the environment comprises determining that audio output of the playback device is distorted by more than a distortion threshold.

6. The playback device of claim 1, wherein detecting the event corresponding to the change in the environment comprises:

detecting that the playback device has been physically moved.

7. The playback device of claim 1, wherein the playback device comprises a network interface, wherein playing back the first audio content comprises streaming data representing the first audio content from one or more first servers, and wherein playing back the second audio content comprises streaming data representing the second audio content from one or more second servers.

8. A method to be performed by an playback device, the method comprising:

while playing back first audio content via one or more amplifiers and one or more speakers, performing a first calibration of the playback device, wherein performing the first calibration comprises;

(i) recording first audio via one or more microphones to capture playback of the first audio content by the playback device; and

(ii) based on the recorded first audio, determining a first playback configuration that at least partially offsets acoustic characteristics of an environment surrounding the playback device; and

(iii) applying the first playback configuration to the playback device;

while playing back second audio content via the one or more amplifiers and the one or more speakers, detecting an event corresponding to a change in the environment surrounding the playback device; and

based on detecting the event, performing a second calibration of the playback device, wherein performing the second calibration comprises;

(i) recording second audio via the one or more microphones to capture playback of the second audio content by the playback device;

(ii) based on the recorded second audio, determining a second playback configuration that at least partially offsets acoustic characteristics of the environment surrounding the playback device; and

(iii) applying the second playback configuration to the playback device.

9. The method of claim 8, wherein the playback device further comprises one or more sensors, and wherein detecting the event corresponding to the change in the environment comprises:

detecting, via the one or more sensors, sensor data indicating the change in the environment surrounding the playback device.

10. The method of claim 9, wherein the one or more sensors comprise a proximity sensor, and wherein detecting the sensor data indicating the change in the environment surrounding the playback device comprises detecting one or more barriers in proximity to the playback device.

11. The method of claim 8, wherein detecting the event corresponding to the change in the environment comprises:

detecting, via the one or more microphones, a change in acoustic response of the environment.

12. The method of claim 11, wherein detecting, via the one or more microphones, the change in acoustic response of the environment comprises determining that audio output of the playback device is distorted by more than a distortion threshold.

13. The method of claim 8, wherein detecting the event corresponding to the change in the environment comprises:

detecting that the playback device has been physically moved.

14. The method of claim 8, wherein the playback device comprises a network interface, wherein playing back the first audio content comprises streaming data representing the first audio content from one or more first servers, and wherein playing back the second audio content comprises streaming data representing the second audio content from one or more second servers.

15. A tangible, non-transitory computer-readable medium having stored thereon instructions executable by a playback device to cause the playback device to perform functions comprising:

while playing back first audio content via one or more amplifiers and one or more speakers, performing a first calibration of the playback device, wherein performing the first calibration comprises;

(i) recording first audio via one or more microphones to capture playback of the first audio content by the playback device; and

(ii) based on the recorded first audio, determining a first playback configuration that at least partially offsets acoustic characteristics of an environment surrounding the playback device; and

(iii) applying the first playback configuration to the playback device;

while playing back second audio content via the one or more amplifiers and the one or more speakers, detecting an event corresponding to a change in the environment surrounding the playback device; and

based on detecting the event, performing a second calibration of the playback device, wherein performing the second calibration comprises;

(i) recording second audio via the one or more microphones to capture playback of the second audio content by the playback device;

(ii) based on the recorded second audio, determining a second playback configuration that at least partially offsets acoustic characteristics of the environment surrounding the playback device; and

(iii) applying the second playback configuration to the playback device.

16. The tangible, non-transitory computer-readable medium of claim 15, wherein the playback device further comprises one or more sensors, and wherein detecting the event corresponding to the change in the environment comprises:

detecting, via the one or more sensors, sensor data indicating the change in the environment surrounding the playback device.

17. The tangible, non-transitory computer-readable medium of claim 16, wherein the one or more sensors comprise a proximity sensor, and wherein detecting the sensor data indicating the change in the environment surrounding the playback device comprises detecting one or more barriers in proximity to the playback device.

18. The tangible, non-transitory computer-readable medium of claim 15, wherein detecting the event corresponding to the change in the environment comprises:

detecting, via the one or more microphones, a change in acoustic response of the environment.

19. The tangible, non-transitory computer-readable medium of claim 18, wherein detecting, via the one or more microphones, the change in acoustic response of the environment comprises determining that audio output of the playback device is distorted by more than a distortion threshold.

20. The tangible, non-transitory computer-readable medium of claim 15, wherein detecting the event corresponding to the change in the environment comprises:

detecting that the playback device has been physically moved.