Hearing Aid Sensor Integration for Microphone Position Compensation
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Solution Overview
Problem
Existing hearing aid devices struggle to automatically adapt to individual user preferences, particularly in terms of physical activity level and head movement, which affects sound amplification and noise reduction, and there is a need for improved orientation detection and loss prevention.
Innovation Solution
Incorporating sensors such as accelerometers, gyroscopes, and compasses into hearing aid devices to detect movement, acceleration, and orientation, allowing for automatic adjustment of settings based on physical activity and head position, and providing features like loss prevention through free fall detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sensors are added to detect movement and acceleration, then the hearing aid can automatically adapt to physical activity and head movement, but the device complexity increases
Solution Approach 1:
The patent combines multiple sensor types (accelerometer, gyroscope, magnetometer) into a single integrated sensor unit within the hearing aid device. This merging approach enables comprehensive detection of movement, acceleration, and orientation while minimizing the increase in device complexity through consolidation rather than separate sensor components.
Solution Approach 2:
The sensor unit serves multiple functions simultaneously: detecting physical activity level, measuring head movement, determining device orientation, and triggering loss prevention alerts. This multi-functionality allows a single sensor system to address multiple adaptation needs without proportionally increasing device complexity.
2Measurement precision
If multiple sensors are integrated into the hearing aid, then measurement precision of movement and orientation is improved, but the device complexity increases
Solution Approach 1:
Multiple sensor types (accelerometer for linear acceleration, gyroscope for rotational velocity, magnetometer for magnetic field orientation) are merged into a single integrated sensor unit. This combination provides comprehensive and precise measurement of movement and orientation while consolidating components to minimize complexity increase.
Solution Approach 2:
A processing unit acts as an intermediary that receives data from multiple sensors and integrates their measurements to produce comprehensive information about physical activity, head movement, and device orientation. This intermediary approach allows precise measurement through multiple sensor inputs while managing complexity through centralized processing.
3Adaptability or versatility
If the hearing aid continuously monitors movement and acceleration, then the adaptability to user preferences is improved, but the energy consumption increases
Solution Approach 1:
The hearing aid employs periodic sampling of sensor data at appropriate intervals rather than continuous monitoring at maximum frequency. The processing unit analyzes sensor signals at optimized rates that balance adaptability to user preferences with energy conservation, adjusting monitoring intensity based on operational context.
Solution Approach 2:
The processing unit automatically analyzes sensor data to detect physical activity levels and head movement patterns without requiring external intervention. The system self-adjusts its operation based on sensor inputs, enabling continuous adaptation to user preferences while managing energy consumption through autonomous decision-making about when and how to process data.
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
Enhances the user's sound experience by optimizing sound amplification and noise reduction based on real-time activity levels and head movements, while reducing the risk of loss through alert systems.
Implementation Method 1
a sensor unit, e.g. comprising an accelerometer
Implementation Method 2
a sensor unit, e.g. comprising a gyroscope
Implementation Method 3
a sensor unit, e.g. comprising a magnetometer
Data Source
AI summary
A hearing aid device is disclosed. The hearing aid device comprises means to improve, augment and/or protect the hearing capability of a user by receiving acoustic signals from the surroundings of the user, generating corresponding audio signals, possibly modifying the audio signals and providing the possibly modified audio signals as audible signals to at least one of the user's ears. The hearing aid device comprises a sensor member for detecting the movement and/or acceleration and/or orientation (or spatial position) of the hearing aid device. The hearing aid device comprises at least two hearing aid microphones and a control unit for determining the position or a deviation from an intended position of the hearing aid device or hearing aid microphones. The hearing aid device is configured to compensate for a possible dislocation of the hearing aid microphones.