# Earbuds That Change Music Beat to Match Your Running Pace > This patent describes earbuds with built-in motion sensors that detect a user's walking or running speed and automatically adjust the beat or rhythm of music playing from a connected device to match that pace. - **Patent:** US 12739554 - **Original title:** Magnetic earphones holder - **Granted:** 2026 - **Status:** Active - **Times cited:** 0 - **Field:** consumer_electronics, software, telecommunications, wearable_tech ## What it does This patent describes a system where small motion sensors, called accelerometers, are placed inside earbuds or earphones. These sensors detect how fast a user is moving, like when they are running or walking, as described in the abstract. Based on this detected pace, the earbuds send a signal to a connected electronic device, such as a smartphone. The electronic device then uses this signal to change the beat or rhythm of the audio it is playing, either speeding it up or slowing it down to match the user's current pace. For example, if a runner speeds up, the music's beat would also increase to keep them motivated. ## What it does NOT cover - Does not cover systems that adjust audio based on biometric data like heart rate or breathing, as the abstract specifies pace detected by accelerometers. - Does not cover earbuds that only track a user's pace without also adjusting the audio's beat or rhythm. - Does not cover adjusting aspects of audio other than its beat or rhythm, such as volume or genre. - Does not cover pace detection systems that use sensors located elsewhere on the body, like a smartwatch or a chest strap, rather than within earbuds or earphones. - Does not cover systems where the audio adjustment happens entirely within the earbud without sending a signal to a separate, remotely connected electronic device. ## The clever bit The novelty lies in the direct, real-time feedback loop: using accelerometers in earbuds to sense a user's moving pace and then automatically adjusting the beat or rhythm of the playing audio to match that pace. ## Real-world examples 1. Fitness tracking apps that integrate with music services 2. Smart earbuds with built-in activity tracking 3. Personalized running coaches that adapt to user performance ## Why it matters This technology aims to make exercise more engaging by synchronizing music with a user's physical activity. By automatically adjusting music to match a runner's pace, it could help maintain motivation and improve workout consistency. This approach could enhance the user experience for fitness enthusiasts and integrate more deeply with personal training programs. ## Frequently asked questions ### What does Earbuds That Change Music Beat to Match Your Running Pace cover? This patent describes earbuds with built-in motion sensors that detect a user's walking or running speed and automatically adjust the beat or rhythm of music playing from a connected device to match that pace. ### 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? This technology aims to make exercise more engaging by synchronizing music with a user's physical activity. By automatically adjusting music to match a runner's pace, it could help maintain motivation and improve workout consistency. This approach could enhance the user experience for fitness enthusiasts and integrate more deeply with personal training programs. ### What does this patent NOT cover? Does not cover systems that adjust audio based on biometric data like heart rate or breathing, as the abstract specifies pace detected by accelerometers. **Full plain-English explainer:** https://patentbrief.org/patent/us/12739554/magnetic-earphones-holder **Original patent:** https://patents.google.com/patent/US12739554 --- _Source: PatentBrief — https://patentbrief.org. Patent facts are from public records; the plain-English explanation is PatentBrief's._ ## Related patents Semantically similar inventions in the PatentBrief corpus: - [Wearable Sensor for Tracking Body Movement and Muscle Activity](https://patentbrief.org/patent/us/10335080/biomechanical-activity-monitoring) — This patent describes a wearable device that combines motion sensing with muscle vibration detection to understand how a body moves and which muscles are being used. - [How Wireless Earbuds Detect Hand Gestures Using Invisible Light or Sound](https://patentbrief.org/patent/us/9949013/airpods-charging-case) — A system for wireless earbuds that uses pulses of infrared light or ultrasound to detect hand movements near the ear, allowing users to control devices without touching them. - [Using a Phone Display as a Visual Beacon Based on Activity](https://patentbrief.org/patent/us/11188196/app-library) — Apple's patent describes a device that changes its screen lighting behavior, such as pulsing or strobing, based on a user's heart rate or body temperature. - [How Speakers Adjust Sound for Moving Listeners](https://patentbrief.org/patent/us/12739581/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. - [Making Real-World Sounds Fit into Mixed Reality Experiences](https://patentbrief.org/patent/us/12738289/voice-processing-for-mixed-reality) — This patent describes how a wearable device can take sounds from the real world, change them to match the acoustics of a virtual environment, and then play them back to a user, making mixed reality feel more realistic.