Hearing Aid Self-Detection via Signal Comparison
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Solution Overview
Problem
Hearing aid users face challenges in detecting changes or abnormalities in their devices without professional assistance, leading to inconvenience and potential worsening of hearing conditions due to inappropriate adjustments or malfunctions.
Innovation Solution
A device and method that allow users to detect changes in hearing aid characteristics by receiving and comparing input and amplified audio signals, using a communication unit, processor, and display to output alarm signals when differences exceed a predetermined threshold, enabling users to identify issues without visiting a hospital.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If hearing aid characteristics are adjusted manually by professionals, then hearing aid performance is optimized, but user convenience deteriorates and time loss increases
Solution Approach 1:
The hearing aid system performs self-diagnosis by automatically detecting changes in its own characteristics through built-in test signal generation and analysis. The processor compares current characteristics against reference values to identify malfunctions or aging effects without requiring external professional intervention, enabling the device to monitor and report its own status.
Solution Approach 2:
The system continuously monitors hearing aid characteristics by generating test signals through the speaker and capturing them with the microphone, then processing the feedback signals to detect changes in amplification factors and other parameters. This closed-loop feedback mechanism enables real-time detection of performance degradation or malfunctions.
2Reliability
If hearing aid characteristics are adjusted manually by professionals, then hearing aid performance is optimized, but time loss increases
Solution Approach 1:
The system continuously monitors hearing aid characteristics in real-time during normal operation, detecting changes before they significantly impact user experience. By performing preliminary detection and alerting users proactively, the system prevents further degradation and eliminates the need for time-consuming manual adjustments or hospital visits.
Solution Approach 2:
The automatic detection system operates continuously or periodically without interrupting the hearing aid's primary function. The processor continuously analyzes test signals and compares characteristics against reference values, ensuring uninterrupted monitoring that detects issues at any time without requiring scheduled professional visits.
3Ease of operation
If automatic detection system is implemented, then user convenience improves, but device complexity increases
Solution Approach 1:
The hearing aid's existing microphone and speaker are utilized for dual purposes: primary audio processing and automatic characteristic detection. The processor leverages existing signal processing capabilities to perform both hearing aid functions and self-diagnosis, eliminating the need for separate dedicated detection hardware and minimizing additional complexity.
Solution Approach 2:
The system creates a digital model of the hearing aid's acoustic path by generating test signals and analyzing the captured feedback. This virtual copy of the acoustic characteristics allows the processor to simulate and compare different operating conditions without requiring physical test equipment or additional sensors.
4Loss of time
If automatic detection system is implemented, then time loss is reduced, but device complexity increases
Solution Approach 1:
The system replaces mechanical or manual detection methods with electronic signal processing. Instead of requiring physical inspection or manual testing by professionals, the processor electronically generates test signals and analyzes feedback through digital signal processing algorithms, achieving rapid automatic detection that eliminates time loss while adding minimal complexity through software-based solutions.
Data Source
AI summary
The present invention relates to a device and a method for detecting a change in characteristics of a hearing aid and informing a user of the change. In one embodiment, a first input audio signal and an second amplified audio signal transmitted from the a hearing aid are received via a communication unit. Simulation is conducted of amplifying of the first input audio signal according to pre-stored auditory information stored in advance, and the processed simulated amplified first input audio signal is compared with the amplified audio signal. An alarm signal is output when a difference between the processed simulated amplified first input audio signal and the second amplified audio signal is greater than a predetermined threshold.