Adaptive Feedback Management in Hearing Prostheses
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Solution Overview
Problem
Current hearing prostheses face challenges in effectively managing feedback paths, which affects the gain margin and overall performance, particularly in individuals with conductive or mixed hearing losses, where traditional methods rely on air conduction and may not adequately address the unique mechanical pathways involved.
Innovation Solution
The development of an adaptive feedback management system within hearing prostheses that determines and adjusts feedback path parameters, including the gain margin, based on the operation of the prosthesis, utilizing advanced algorithms and adaptive filter systems to optimize sound transmission through bone conduction, thereby improving the perception of sound for individuals with conductive or mixed hearing losses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional air conduction methods are used in hearing aids, then the device structure is simple, but the effectiveness in addressing conductive and mixed hearing losses is insufficient
Solution Approach 1:
The patent replaces traditional air conduction mechanical pathways with bone conduction vibrations. The hearing prosthesis converts received sound into vibrations that are transferred through the skull to the cochlea, bypassing the impeded mechanical pathways (ossicular chain or ear canal) in conductive hearing loss cases. This substitution of the transmission mechanism resolves the contradiction by providing effective sound transmission through an alternative pathway.
Solution Approach 2:
The patent employs adaptive feedback management systems that dynamically adjust feedback path parameters and gain margins based on real-time operation. This allows the device to optimize performance for different types of hearing losses (conductive, sensorineural, or mixed) by changing operational parameters rather than requiring different physical structures, thus maintaining simplicity while improving reliability.
2Adaptability or versatility
If fixed feedback path parameters are used, then the system is simple to implement, but the adaptability to different hearing loss conditions is limited
Solution Approach 1:
The patent implements a feedback management system that continuously monitors the operation of the hearing prosthesis and adjusts feedback path parameters accordingly. The system determines feedback path parameters based on the operation of the adaptive system, creating a closed-loop control mechanism. This feedback approach enables the device to adapt to different hearing loss conditions (conductive, sensorineural, or mixed) by dynamically adjusting gain margins and feedback cancellation, resolving the contradiction between adaptability and complexity.
Solution Approach 2:
The patent transitions from fixed feedback path parameters to dynamic, adaptive parameters that change based on operational conditions. The gain margin is set based on the operation of the adaptive system, allowing the device to optimize performance for different hearing loss types and environmental conditions. This dynamic adjustment capability provides versatility across different hearing loss conditions while managing complexity through systematic adaptation.
3Manufacturing precision
If gain margin is not dynamically adjusted, then the system operation is stable, but the sound perception quality for individual recipients is suboptimal
Solution Approach 1:
The patent implements a self-adjusting feedback management system that automatically determines feedback path parameters and sets gain margins based on its own operation. The system performs self-optimization by analyzing its operational characteristics and adjusting parameters accordingly, eliminating the need for manual tuning while achieving personalized sound perception quality. This self-service approach resolves the contradiction by maintaining simple operation while improving precision through automated adaptation.
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
This approach enhances the ability of hearing prostheses to provide effective sound perception by dynamically managing feedback, allowing for personalized adjustment of the gain margin and improving the utilitarian value in addressing conductive and mixed hearing losses.
Implementation Method 1
certain types of hearing prostheses commonly referred to as bone conduction devices, convert a received sound into vibrations. The vibrations are transferred through the skull to the cochlea causing generation of nerve impulses
Data Source
AI summary
A method including operating an adaptive system of a hearing prosthesis, and determining one or more feedback path parameters of the hearing prosthesis based on the operation of the adaptive system of the hearing prosthesis, wherein the action of determining one or more feedback path parameters includes determining the one or more feedback path parameters based on data based on adaptive filter coefficients of adaptive filters of the adaptive system.