Earpiece Position Detection Using Inner and Outer Microphones
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Solution Overview
Problem
Personal acoustic devices often have cumbersome controls and user safety and ease of use issues due to minimized size and weight, with controls being inconveniently located, leading to forgetfulness when positioning or removing the device from the ear.
Innovation Solution
An apparatus and method using inner and outer microphones to determine the operating state of an earpiece by analyzing signal differences, allowing for automated adjustments such as altering power provision, noise reduction, and audio routing based on the device's position relative to the user's ear.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of stationary object
If controls are made smaller to minimize device size and weight, then device portability is improved, but ease of operation deteriorates
Solution Approach 1:
The system automatically detects earpiece positioning and controls operational states without requiring manual user interaction. The processor monitors acoustic signals and autonomously determines when the earpiece is inserted into or removed from the ear, eliminating the need for users to manually operate controls.
Solution Approach 2:
The patent replaces manual mechanical control operations with an automated acoustic detection system. Microphones capture acoustic signals, and the processor analyzes these signals to determine operational states, substituting physical control interactions with automated electronic sensing and processing.
2Ease of operation
If controls are integrated into the personal acoustic device, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The existing microphones and processors in the personal acoustic device are made multi-functional. The microphones serve both their primary function of capturing acoustic signals for audio processing and an additional function of detecting earpiece positioning. The processor similarly handles both audio signal processing and positioning detection, eliminating the need for separate dedicated control components.
Solution Approach 2:
The system uses its own existing components (microphones and processors) to perform the additional function of positioning detection and control, rather than requiring external or separate control mechanisms. This self-service approach maintains ease of operation while minimizing increases in device complexity.
3Adaptability or versatility
If manual control operations are required, then device functionality is achieved, but user safety deteriorates due to forgotten operations
Solution Approach 1:
The system continuously monitors acoustic signals and provides real-time feedback about earpiece positioning status. Based on this feedback, the processor automatically adjusts operational states, ensuring that safety-critical functions are activated or deactivated according to the actual physical state of the device, thereby preventing unsafe operations due to user forgetfulness.
Solution Approach 2:
The system proactively detects earpiece insertion and removal events and automatically initiates appropriate control actions in advance of any potential user forgetfulness. By continuously monitoring and preemptively adjusting operational states, the system ensures safety-critical controls are operated before issues arise.
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 user safety and ease of use by automatically determining the device's position and taking appropriate actions, such as altering power or noise reduction settings, thereby improving operational convenience and reducing the likelihood of user error.
Implementation Method 1
analyzing signals output by at least an inner microphone disposed within a cavity of a casing of the earpiece and an outer microphone disposed on the personal acoustic device
Data Source
AI summary
A apparatus and method for determining an operating state of an earpiece of a personal acoustic device and/or the entirety of the personal acoustic device by analyzing signals output by at least an inner microphone disposed within a cavity of a casing of the earpiece and an outer microphone disposed on the personal acoustic device in a manner acoustically coupling it to the environment outside the casing of the earpiece.