Hearing Device Touch Gesture Control via Acoustic Detection
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Solution Overview
Problem
Conventional hearing devices face challenges with space requirements, high costs, operational complexity, limited control functionality, maintenance needs, and waterproofing issues due to mechanical control elements, which are difficult for users with reduced dexterity and prone to failure.
Innovation Solution
A method and device using dual microphones to detect touch gestures across a housing, allowing users to control hearing device settings through swipe and tap actions, eliminating the need for mechanical controls and enabling customizable control signals based on gesture characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mechanical control elements (pushbuttons, toggles, rockers, rotary switches, touchpads) are used in hearing devices, then control functionality is provided, but device volume increases, manufacturing costs increase, and reliability decreases due to moving parts
Solution Approach 1:
The patent replaces mechanical control elements with acoustic field-based touch detection. The hearing device uses microphones to detect acoustic signals generated by finger touches on the housing surface, eliminating the need for physical buttons, toggles, or rotary switches. This substitution of mechanical systems with acoustic sensing maintains full control functionality while significantly reducing device volume and removing moving parts that could fail.
2Ease of operation
If mechanical control elements are used in hearing devices, then control functionality is provided, but manufacturing costs increase and reliability decreases due to component complexity and moving parts
Solution Approach 1:
The patent eliminates mechanical control elements entirely by using acoustic field-based touch detection through microphones. This removes all moving parts, mechanical contacts, and complex assemblies from the control interface, dramatically improving reliability by eliminating failure points associated with mechanical wear, dirt accumulation, and component breakdown.
Solution Approach 2:
The hearing device housing surface serves dual purposes: it maintains its primary structural and aesthetic function while simultaneously acting as a touch-sensitive control surface. The existing housing material and surface properties are leveraged to detect touch gestures through acoustic emissions, eliminating the need for separate control components and reducing overall device complexity.
3Volume of moving object
If mechanical control elements are used in hearing devices, then control functionality is provided, but ease of operation deteriorates for users with reduced dexterity due to tiny dimensions
Solution Approach 1:
The patent replaces tiny mechanical control elements with acoustic field-based touch detection that responds to gestures of any size. Users can tap, swipe, or press anywhere on the housing surface with any degree of force, and the microphones detect the resulting acoustic signals. This eliminates the precision and dexterity requirements imposed by small mechanical buttons and switches.
4Ease of operation
If mechanical control elements are used in hearing devices, then control functionality is provided, but device complexity increases and waterproofing becomes difficult
Solution Approach 1:
The patent eliminates mechanical control elements and their associated moving parts, springs, contacts, and assemblies by using acoustic field-based touch detection. This simplifies the device design significantly, removing entire subsystems and reducing overall complexity while maintaining full control functionality through software-based gesture recognition.
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 solution reduces device size, cost, and maintenance, enhances user control, and improves reliability by using touch gestures to control hearing settings, allowing for more intuitive and efficient operation without mechanical parts, while enabling customization to individual user preferences.
Implementation Method 1
detecting a touch gesture carried out by a wearer of the hearing device using a finger... by determining if a first output signal from the first microphone contains a component caused by the finger touching... and if a second output signal from the second microphone contains a component caused by the finger touching
Data Source
AI summary
A method for controlling a hearing device via touch gestures carried out by a wearer of the hearing device. As part of the gesture a finger is swiped across first and second sound inlets of the hearing device. A gesture is detected by determining if a first output signal from a first microphone at the first sound inlet contains a component caused by the finger touching the hearing device at the first sound inlet and if a second output signal from a second microphone at the second sound inlet contains a component caused by the finger touching the hearing device at the second sound inlet. Based on the detected gesture a control signal changes a processing parameter or setting of a signal processing unit of the hearing device. Additionally, a hearing device capable of performing the proposed method and a method of fitting such a hearing device are provided.