Bone Conduction Earphone Vibration Feedback for Wear and Sound Stability
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Solution Overview
Problem
Bone conduction earphones can experience reduced functionality and poor user experience due to improper wearing, varying clamping forces, and inconsistent sound quality, which affects hearing and wearing comfort.
Innovation Solution
A method involving a bone conduction earphone with a vibration sensor that detects the earphone's vibration response features based on audio signals, allowing for feedback mechanisms to optimize the working state by adjusting power consumption, prompting proper wearing, adjusting clamping force, and performing EQ compensation to ensure consistent sound quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the bone conduction earphone is worn improperly or with insufficient clamping force, then the earphone core is poorly attached to the skin, but the user cannot hear sound properly and the wearing experience deteriorates
Solution Approach 1:
The patent implements a feedback mechanism where the vibration sensor continuously monitors the vibration signal from the earphone core, and the processor analyzes this signal to determine wearing status. Based on the analysis results, the system provides feedback to guide users to wear the earphone correctly or adjusts working parameters automatically, creating a closed-loop control system that resolves the contradiction between reliability and ease of operation.
Solution Approach 2:
The system performs self-diagnosis by analyzing its own vibration signals to determine whether it is being worn properly. The earphone automatically identifies its wearing status and can adjust its working state without external intervention, enabling the device to serve itself in monitoring and optimizing its performance.
2Reliability
If the clamping force is increased to improve attachment, then the earphone core attaches better to the skin, but the wearing comfort decreases due to excessive pressure
Solution Approach 1:
The patent employs dynamic adjustment of the earphone's working state based on real-time vibration signal analysis. The system continuously monitors attachment quality and adjusts parameters such as driving signal intensity or frequency to maintain optimal attachment without requiring constant high clamping force, thereby reducing pressure on the user's head while preserving reliable attachment.
Solution Approach 2:
The system changes operational parameters (such as driving signal characteristics) based on the analyzed vibration response. By adjusting these parameters dynamically, the earphone maintains effective bone conduction transmission without needing to apply excessive mechanical pressure, thus resolving the contradiction between attachment quality and user comfort.
3Measurement precision
If the vibration signal analysis is performed continuously to monitor wearing status, then the wearing status is accurately determined, but the power consumption increases
Solution Approach 1:
The patent implements periodic monitoring rather than continuous analysis of vibration signals. The processor analyzes vibration signals at specific intervals or under specific conditions (such as when wearing status may have changed), thereby maintaining accurate wearing status detection while significantly reducing overall power consumption compared to continuous monitoring.
Solution Approach 2:
The system maintains the capability for accurate wearing status detection by continuously acquiring vibration signals, but performs actual analysis only when necessary. This approach preserves the measurement precision capability while minimizing the energy expenditure associated with signal processing, achieving a balance between detection accuracy and power consumption.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances user experience by ensuring proper wearing, maintaining optimal sound quality, and reducing power consumption through adaptive adjustments based on vibration response features.
Implementation Method 1
obtaining a vibration signal by the at least one vibration sensor, the vibration signal being at least partially derived from vibration generated by the earphone core in response to an audio signal, and the vibration of the earphone core being transmitted to a user wearing the bone conduction earphone through bone conduction
Data Source
AI summary
The present disclosure is a method for optimizing a working state of a bone conduction earphone. The bone conduction earphone includes an earphone core and at least one vibration sensor. The method includes: obtaining a vibration signal through the at least one vibration sensor, the vibration signal being at least partially derived from vibration generated by the earphone core in response to an audio signal, and the vibration of the earphone core being transmitted to a user wearing the bone conduction earphone through bone conduction; determining a vibration response feature of the earphone core based on the vibration signal and the audio signal; and feeding back a working state of the bone conduction earphone based on the vibration response feature of the earphone core.