Hearing Instrument Tap Training for Reliable Gesture Detection
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Solution Overview
Problem
Existing tap control methods for hearing instruments are prone to high rates of positive and negative identification errors due to individual user behavior variability and lack of intuitive interaction, particularly affecting older users and those with motor restrictions.
Innovation Solution
A method that trains users to perform a specific multiple finger tap through a prompt and feedback system, using integrated sensors to detect and compare the tap signature against a predefined pattern, providing feedback on accuracy and assisting in the learning process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple tap control is implemented in hearing instruments, then the device complexity is reduced, but the identification accuracy of user taps deteriorates due to high rates of positive and negative identification errors
Solution Approach 1:
The patent implements a feedback mechanism where the hearing instrument provides audible feedback sounds to confirm successful tap detection. The system monitors tap patterns, compares them against stored patterns, and provides feedback through the hearing instrument's audio output to confirm correct detection or indicate detection errors, thereby improving identification accuracy without significantly increasing complexity
Solution Approach 2:
The patent stores multiple tap patterns in advance in the memory unit, including both valid command patterns and anticipated interference patterns. By pre-storing these patterns and their characteristics, the system can quickly compare incoming tap signals against known patterns without complex real-time analysis, maintaining low complexity while achieving high accuracy
2Reliability
If tap control criteria are made more sensitive to distinguish real taps from interference, then the reliability of tap detection is improved, but the rate of negative identification errors increases causing real taps to be missed
Solution Approach 1:
The patent segments the tap detection process into multiple independent evaluation criteria: amplitude threshold checking, duration verification, inter-tap interval analysis, and pattern matching. By dividing the detection process into separate segments that can be independently evaluated, the system achieves high reliability without increasing negative identification errors, as each segment contributes a specific aspect of tap validation
3Ease of operation
If individual user tap behavior is accommodated, then the ease of operation is improved, but the device complexity increases requiring adaptive learning systems
Solution Approach 1:
The patent implements a universal tap control system that recognizes multiple tap patterns (single tap, double tap, triple tap) and associates them with different commands. By designing the system to handle multiple pattern types through a unified framework using stored patterns and configurable associations, the system achieves ease of operation for diverse users without requiring complex adaptive learning 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
Reduces the frequency of identification errors by aligning user behavior with the expected tap pattern, enhancing the operating friendliness and reliability of tap controls for diverse user groups.
Implementation Method 1
a sensor (28) integrated in the hearing instrument (4) which is designed to detect a tapping movement of the user on the hearing instrument (4)
Implementation Method 2
The sensor can be designed as a capacitive sensor, which detects as the signature of the finger tap a capacitance change induced by the approach of a finger of the user
Data Source
AI summary
A method for operating a hearing instrument worn in or on the ear and a hearing system having such a hearing instrument. In operation of the hearing instrument, an action of the hearing instrument or an external functional unit connected thereto can be triggered by a multiple, in particular double, finger tap on the hearing instrument. In a multiple tap test step, a multiple tap prompt to execute the multiple finger tap is output to the user. By way of a sensor integrated in the hearing instrument, in particular an acceleration sensor or a gyroscopic sensor, a measurement signal is detected which contains a signature of the executed multiple finger tap. The measurement signal is compared with a stored multiple tap pattern for the multiple finger tap. Feedback is output to the user as to whether the signature contained in the measurement signal corresponds to the multiple tap pattern.