How Speakers Adjust Sound for Moving Listeners
This patent describes how a speaker system can automatically change its sound settings when it detects that people listening to it have moved to a different spot.
Original patent title: “Calibration based on audio content”
This patent describes how a speaker system can automatically change its sound settings when it detects that people listening to it have moved to a different spot. Granted in 2026.
Coverage
What does this patent actually cover?
The patent describes a system where a playback device, like a smart speaker, first plays audio using a specific sound setup, called a 'first calibration'. It then actively detects if the arrangement of one or more listeners relative to the speaker has changed. For example, if a listener moves from sitting directly in front of the speaker to a different position in the room. Based on this detected change in listener arrangement, the playback device automatically applies a 'second calibration' to its sound output. This ensures the audio quality remains optimized for the new listening positions.
The gap
What does this patent NOT cover?
- Does not cover sound adjustments based on the type of audio content playing, such as switching settings for music versus podcasts.
- Does not cover manual sound adjustments made by a user through an app or physical controls.
- Does not cover calibration based solely on changes in room acoustics without considering listener position.
- Does not cover systems that only use a single, static sound calibration regardless of listener movement.
- Does not cover calibration triggered by environmental factors like temperature or humidity.
These exclusions are unique to PatentBrief — derived from the actual claim language, not patent-office boilerplate.
Key facts
What made this novel
The truly novel aspect is the automatic, dynamic adjustment of sound calibration specifically triggered by detecting a change in the physical arrangement of listeners. Most audio systems either calibrate once for a room or require manual intervention to adjust settings when listening conditions change.
Schematic visualization of the patent's claim structure. Hand-drawn diagrams in progress for each landmark patent.
Where you've seen this
Real-world examples
Apple HomePod
Amazon Echo Studio
Sonos Arc soundbar
Google Nest Audio
Advanced home theater receivers with room correction
Why it matters
The bigger picture
Good sound quality often depends on where the listener is located relative to the speakers. This patent aims to maintain optimal audio performance even if listeners move around a room, improving the overall experience for music, movies, or other audio content without requiring manual adjustments. It helps ensure that the sound field is consistently tailored to the audience's location.
Filed
November 6, 2023
Granted
September 15, 2026
Market context
Who's building on this
Companies in this space
Companies like Sonos, Apple, Google, and Amazon are actively developing and integrating adaptive audio technologies into their smart speakers and sound systems. These companies continuously seek to improve user experience through features that automatically optimize sound based on environmental factors and listener presence. Bose also invests in advanced audio processing for its consumer products.
Market impact
This technology enhances the user experience by providing consistent audio quality regardless of listener movement, potentially making adaptive sound a standard feature in high-end audio devices and smart speakers. It encourages product differentiation based on advanced calibration features, pushing manufacturers to develop more sophisticated sensing and audio processing capabilities. This could lead to a market where 'set-it-and-forget-it' audio systems become the norm.
Claim 1 — Plain English
What this patent covers
The patent describes a system where a playback device, like a smart speaker, first plays audio using a specific sound setup, called a 'first calibration'. It then actively detects if the arrangement of one or more listeners relative to the speaker has changed. For example, if a listener moves from sitting directly in front of the speaker to a different position in the room. Based on this detected change in listener arrangement, the playback device automatically applies a 'second calibration' to its sound output. This ensures the audio quality remains optimized for the new listening positions.
The clever bit
The truly novel aspect is the automatic, dynamic adjustment of sound calibration specifically triggered by detecting a change in the physical arrangement of listeners. Most audio systems either calibrate once for a room or require manual intervention to adjust settings when listening conditions change.
What it does not cover
- Does not cover sound adjustments based on the type of audio content playing, such as switching settings for music versus podcasts.
- Does not cover manual sound adjustments made by a user through an app or physical controls.
- Does not cover calibration based solely on changes in room acoustics without considering listener position.
- Does not cover systems that only use a single, static sound calibration regardless of listener movement.
- Does not cover calibration triggered by environmental factors like temperature or humidity.
Patent timeline
Application submitted to the patent office
Patent officially issued
PatentBrief Score
Impact Score
Early stage
Citation count
0/40
No citations yet
Claim breadth
0/20
Narrow claimsclaimsThe numbered statements at the end of a patent that legally define what the inventor owns.Read more →
Recency
20/20
Granted within 5 years
Assignee scale
0/20
Independent or smaller assigneeassigneeThe entity that owns the patent — usually the inventor's employer or a company.Read more →
PatentBrief Impact Score — based on citation count, claim breadth, recency, and assignee scale. Not a legal assessment.
Heuristic Value Estimate
What this patent might be worth
$17K – $54K
Midpoint $34K · 17.1 yr remaining · industry ×1.4
Heuristic only — blends forward/backward citation counts, claim scope, time remaining, litigation history, and CPC-derived industry baseline. Real valuations need a professional appraisal.
Claim text not yet imported for this patent
Concepts involved
Cite this patent
(2026). How Speakers Adjust Sound for Moving Listeners (U.S. Patent No. 12,739,581). U.S. Patent and Trademark Office. https://patentbrief.org/patent/us/12739581/calibration-based-on-audio-content
Auto-generated from the patent record. Double-check author order and the issue date against the official USPTO document before submitting.
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Common Questions
Frequently Asked Questions
What does How Speakers Adjust Sound for Moving Listeners cover?
This patent describes how a speaker system can automatically change its sound settings when it detects that people listening to it have moved to a different spot.
When does this patent expire?
This patent is expected to expire on September 15, 2046, when the invention enters the public domain.
What problem does this patent solve?
Good sound quality often depends on where the listener is located relative to the speakers. This patent aims to maintain optimal audio performance even if listeners move around a room, improving the overall experience for music, movies, or other audio content without requiring manual adjustments. It helps ensure that the sound field is consistently tailored to the audience's location.
What does this patent NOT cover?
Does not cover sound adjustments based on the type of audio content playing, such as switching settings for music versus podcasts.
Patent monitoring