Behind-the-ear Hearing Aid Accelerometer Donning Feedback
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Solution Overview
Problem
Hearing assistance devices often fail to provide proper positioning guidance to users, leading to suboptimal placement, which affects signal quality and user comfort, especially in direct-to-consumer markets where audiologist training is not available.
Innovation Solution
Incorporating an accelerometer in the behind-the-ear (BTE) portion of the device to measure acceleration due to gravity, providing real-time audio and visual feedback to help users adjust the device's position correctly, using a pre-trained classifier to differentiate between proper and improper placement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If direct-to-consumer market model is adopted to eliminate audiologist visits, then device accessibility and market reach are improved, but user ability to properly don the device deteriorates
Solution Approach 1:
The patent implements a feedback mechanism using an accelerometer to detect the gravitational vector and determine whether the BTE device is properly positioned on the user's ear. The system provides real-time feedback through audio or visual indicators that guide the user to adjust the device until proper positioning is achieved, thereby enabling self-donning without professional assistance.
Solution Approach 2:
The patent enables the device to serve itself by automatically detecting its own positioning status through the accelerometer and providing guidance to the user. The system performs self-diagnosis of its mounting condition and guides the user through the correction process, eliminating the need for external professional training.
2Device complexity
If device positioning guidance is not provided, then device complexity is reduced, but signal quality deteriorates due to improper microphone positioning
Solution Approach 1:
The patent uses the accelerometer to continuously monitor the device's orientation and provides feedback to the user when the microphone array is not properly positioned. This feedback loop ensures that the microphones remain in optimal positions for capturing external sounds while excluding the user's voice, thereby maintaining high signal-to-noise ratio without requiring complex mechanical positioning mechanisms.
3Measurement precision
If iterative feedback is provided during adjustment, then positioning accuracy is improved, but device complexity increases due to additional sensing and processing
Solution Approach 1:
The patent implements iterative feedback by continuously monitoring the accelerometer data as the user adjusts the device and providing real-time guidance until optimal positioning is achieved. The system processes the gravitational vector measurements to determine proper orientation and guides the user through multiple adjustment iterations, achieving high positioning accuracy through software-based feedback rather than complex mechanical adjustment mechanisms.
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
Enables users to properly don the device without professional assistance, improving signal quality and long-term comfort and stability by providing iterative feedback during the adjustment process.
Implementation Method 1
measuring acceleration due to gravity using an accelerometer positioned on a BTE portion of the hearing assistance device
Data Source
AI summary
Aspects of the present disclosure provide methods and apparatuses for determining if a BTE portion of a hearing assistance device is determined to be either a “good fit” (i.e. placed correctly) or “bad fit” (i.e. placed incorrectly). The hearing assistance device includes a sensor in the BTE portion of the device. The sensor measures acceleration due to gravity in one or more of the x, y, and z directions, or any combination thereof. The measured acceleration is input into a pre-trained classifier model that outputs whether the BTE portion is placed correctly or not placed correctly. At least one of the hearing assistance device or a user device in communication with the hearing assistance device provides feedback regarding the positioning of the hearing assistance device. In aspects, the hearing assistance device or the user device guides the user to properly adjust placement of the BTE portion of the device.