Hearing Device Wear State Detection Using Feedback Microphone
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Solution Overview
Problem
The existing methods for detecting the wear state of noise-cancelling hearing devices require additional sensors, increasing design complexity and cost.
Innovation Solution
A method using a feedback microphone to obtain transient pulse signals and determine the wear state based on characteristic parameters, such as amplitude and frequency-domain analysis, without the need for additional sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If additional infrared sensors are added to detect wear state, then wear state detection accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The feedback microphone, originally designed for noise-cancelling function, is made to serve dual purposes: noise cancellation and wear state detection. By analyzing the transient pulse signal characteristics (amplitude, frequency domain) captured by the microphone, the system determines wear state without requiring dedicated sensors, thus achieving multi-functionality and reducing device complexity
Solution Approach 2:
The system uses its existing feedback microphone to detect wear state changes, leveraging the microphone's inherent capability to capture sound signals. The transient pulse signal generated during wear state transitions (putting on/taking off) is processed using characteristic parameter analysis, allowing the device to self-diagnose wear state without external hardware assistance
2Measurement precision
If additional infrared sensors are added to detect wear state, then wear state detection accuracy is improved, but manufacturing cost increases
Solution Approach 1:
The feedback microphone is designed to perform both noise cancellation and wear state detection functions. The system processes the transient pulse signal by analyzing characteristic parameters such as amplitude thresholds and frequency domain correlations, enabling the same hardware component to serve multiple purposes and thereby reducing manufacturing costs
Solution Approach 2:
The device uses its existing feedback microphone to monitor wear state changes, eliminating the need for additional sensor components. The processing system analyzes signal characteristics (amplitude, frequency domain properties) to determine wear state, reducing bill of materials cost and simplifying manufacturing processes
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
Accurately detects the wear state of noise-cancelling hearing devices in a timely manner without requiring hardware upgrades, reducing design complexity and cost.
Implementation Method 1
obtaining a transient pulse signal through the feedback microphone
Implementation Method 2
transforming the transient pulse signal into frequency-domain to obtain a frequency-domain signal spectrum
Data Source
AI summary
The present disclosure discloses wear state of a hearing device detection method and apparatus, and a device and a storage medium. The method comprises: a feedback microphone obtaining a transient pulse signal; and according to a feature parameter of the transient pulse signal and the previous wear state of the noise-cancelling hearing device, determining the current wear state of a noise-cancelling hearing device. A feedback microphone in a noise-cancelling hearing device itself that is used to cancel noise is used to detect the wear state of the hearing device. In this way, upon determining the wear state of the noise-cancelling hearing device, no additional sensor is required for the noise-cancelling hearing device, and instead, the feedback microphone of the noise-cancelling hearing device itself can be used to accurately detect the wear state of the hearing device in a timely manner.