Sensor management for wireless devices

By monitoring microphone input in wireless headphones, selecting the sensor combination with the optimal signal-to-noise ratio, and utilizing Bluetooth Low Energy audio topology to achieve seamless role switching and microphone gain negotiation, the problem of voice pickup under the influence of wind noise is solved, improving voice quality and real-time performance.

CN116615918BActive Publication Date: 2026-07-21BOSE CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BOSE CORP
Filing Date
2021-11-08
Publication Date
2026-07-21

AI Technical Summary

Technical Problem

Existing wireless headphones suffer from reduced voice pickup quality under environmental noise interference, especially wind noise, and the high latency of traditional Bluetooth connections during role switching affects real-time voice conversations.

Method used

By monitoring microphone input on the left and right wearable devices, the system selects the sensor combination with the optimal signal-to-noise ratio, utilizes Bluetooth Low Energy audio topology to achieve seamless role switching and microphone gain negotiation, and combines beamforming and active noise cancellation technologies to optimize voice pickup.

Benefits of technology

It improves the quality of speech pickup in noisy environments, reduces latency, enhances the signal-to-noise ratio, and ensures the clarity and reliability of real-time voice conversations.

✦ Generated by Eureka AI based on patent content.

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Abstract

A system and method for selecting audio capture sensors of a wearable device when obtaining speech data is provided. The method provides obtaining signals associated with a user's speech at a first wearable device and a second wearable device; comparing energy levels of the first signal and the second signal; and selecting one or more audio capture sensors based on the energy levels of each signal. Due to the symmetry of acoustic energy produced by the user's speech to the first wearable device and the second wearable device, any difference in energy levels between the total energy obtained by the first wearable device and the total energy obtained by the second wearable device can be attributed to environmental noise only. Thus, the device with the higher total energy has a lower signal-to-noise ratio, and selection of the audio capture sensors of the other wearable device with the higher signal-to-noise ratio is provided to obtain speech data that moves forward.
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