Bone Conduction Hearing Device State Detection via Feedback Analysis
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing bone conduction hearing devices face challenges in detecting abnormal states, such as incorrect wearing, abnormal structure, foreign body intrusion, and foreign body blocking, which can lead to reduced sensitivity or malfunction, highlighting the need for effective real-time state detection methods.
Innovation Solution
A method and system that utilize a feedback analysis unit and signal processing unit to determine the feedback path transfer function by generating test sounds and comparing them with preset transfer functions, allowing for the identification of normal or abnormal states, including incorrect wearing, abnormal structure, foreign body intrusion, and foreign body blocking states, and adaptively adjusting parameters or sending reminders accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional state detection methods are used, then device state can be monitored, but external devices like accelerometers are required which increases device complexity
Solution Approach 1:
The hearing device uses its own built-in microphone and speaker to generate test sounds and detect feedback, eliminating the need for external detection devices. The device performs self-diagnosis by analyzing the feedback path transfer function using its existing components, thereby monitoring its own state without requiring additional external sensors or equipment.
Solution Approach 2:
The microphone and speaker, originally designed for primary hearing assistance functions, are also utilized for state detection purposes. By making these components multi-functional, the system achieves state monitoring capability without adding dedicated detection hardware, thus reducing overall device complexity while maintaining detection reliability.
2Reliability
If real-time state detection is implemented, then malfunctions can be prevented, but detection algorithms increase processing requirements
Solution Approach 1:
The system performs state detection at specific intervals or under specific conditions rather than continuously monitoring all parameters at full resolution. By applying partial detection strategies, the system achieves adequate malfunction prevention while reducing the overall computational load and energy consumption of signal processing operations.
3Measurement precision
If multiple preset feedback path transfer functions are stored, then detection accuracy is improved, but memory requirements increase
Solution Approach 1:
Instead of uniformly storing high-resolution transfer function data across all possible states, the system stores multiple preset feedback path transfer functions corresponding to specific critical states (normal state and various abnormal states). This selective storage approach maintains detection precision for distinguishing between different device states while optimizing memory usage by only storing essential reference profiles.
Data Source
AI summary
The present disclosure provides methods and systems for detecting the state of a bone conduction hearing device. The bone conduction hearing device comprises at least a microphone, a speaker, a feedback analysis unit, and a signal processing unit. The speaker may generate a third sound based on a first signal, wherein the first signal may be generated by the signal processing unit. The microphone may receive the third sound and generate a feedback signal. The feedback analysis unit may determine a feedback path transfer function from the speaker to the microphone based on the feedback signal and the first signal, obtain at least one preset feedback path transfer function, and compare the feedback path transfer function and the at least one preset feedback path transfer function. The signal processing unit may determine the state of the bone conduction hearing device based on a comparison result.