Hearing Prosthesis Gain Margin Adjustment via Feedback Path Monitoring
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Solution Overview
Problem
Current hearing prostheses face challenges in optimizing the gain margin settings due to variations in the feedback path over time, leading to potential unacceptable feedback-influenced hearing perceptions, which existing safety factors may conservatively limit, reducing the effectiveness of the hearing experience.
Innovation Solution
The method involves obtaining data on the current or anticipated future state of the hearing prosthesis to adjust the gain margin dynamically, considering the specific state of the device and its connection type, rather than relying on a fixed safety factor, thereby optimizing the amplification and reducing feedback issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a fixed safety factor is used to set the gain margin, then feedback-influenced hearing perceptions are controlled, but the amplification effectiveness is reduced
Solution Approach 1:
The patent implements dynamic gain margin adjustment based on the actual feedback path characteristics detected at different times. Instead of using a fixed safety factor, the system continuously monitors feedback path changes and adapts the gain margin accordingly, allowing the hearing prosthesis to operate at optimal amplification levels while maintaining feedback control when conditions permit
Solution Approach 2:
The system changes the gain margin parameter based on detected feedback path characteristics. By measuring actual feedback levels and adjusting the gain margin parameter dynamically, the system optimizes amplification effectiveness while maintaining acceptable feedback control, rather than relying on conservative fixed safety factors
2Productivity
If the gain margin is increased to improve amplification, then hearing effectiveness is enhanced, but feedback-influenced perceptions may become unacceptable
Solution Approach 1:
The system uses feedback from actual measurements of the feedback path to dynamically adjust the gain margin. By continuously monitoring feedback characteristics and using this information to adjust amplification parameters, the system achieves optimal hearing effectiveness while preventing unacceptable feedback-influenced perceptions through real-time adaptation
Solution Approach 2:
The gain margin is implemented as a dynamic parameter that changes based on actual operating conditions and feedback path characteristics. This allows the system to increase amplification when feedback conditions are favorable and reduce amplification when feedback becomes problematic, optimizing hearing effectiveness while controlling feedback influence
3Productivity
If the feedback path is monitored continuously to optimize gain margin, then amplification is optimized, but device complexity increases
Solution Approach 1:
The hearing prosthesis performs self-monitoring of its own feedback path characteristics and automatically adjusts its gain margin accordingly. The device uses its existing sensors and processors to detect feedback path changes and implement appropriate gain margin adjustments without requiring external monitoring equipment or complex additional hardware
Data Source
AI summary
A method including obtaining data based on a current and/or anticipated future state of a hearing prosthesis and adjusting a set gain margin of the hearing prosthesis based on the current or anticipated future state of the hearing prosthesis.