Earphone Ear Structure Detection and Sound Channel Switching
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Solution Overview
Problem
Users often wear earphones incorrectly, leading to poor auditory experiences due to reduced sound quality, especially in dark environments or with worn-out identification markers.
Innovation Solution
An earphone recognition method that acquires and compares ear structure information using piezoelectric film sensors and audio control circuits to determine correct wear, automatically switching sound channels and prompting users to re-wear if incorrect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If identification symbols (L and R) are marked on earphones, then users can distinguish left and right sound channels, but the symbols will be gradually worn and disappear with use, making it difficult to distinguish
Solution Approach 1:
The patent replaces mechanical identification symbols with acoustic field-based identification. The system uses audio signals to transmit left-right channel information wirelessly to the user's terminal device, eliminating the need for physical markings that wear out. This substitution of mechanical identification with electronic/acoustic identification resolves the contradiction between initial identification accuracy and long-term durability.
2Measurement precision
If identification symbols are marked on earphones, then users can distinguish left and right sound channels, but in dark environments or low light, it is difficult for users to distinguish the symbols
Solution Approach 1:
The patent replaces visual identification symbols with acoustic field-based identification that works independently of light conditions. The audio signals transmit channel information that can be received by the user's terminal device regardless of environmental illumination, resolving the contradiction between identification accuracy and environmental light availability.
3Reliability
If the earphone automatically switches sound channels when incorrect wear is detected, then users can still hear proper sound quality, but the system complexity increases with sensors and control circuits
Solution Approach 1:
The patent makes the earphone's piezoelectric film sensor perform multiple functions: it serves both as the sound reception element and as the sensor for detecting ear structure and determining correct wear. This multi-functionality reduces the need for additional dedicated sensors, thereby mitigating the increase in device complexity while maintaining sound quality assurance through automatic channel switching.
4Measurement precision
If the earphone uses piezoelectric film sensors to detect ear structure, then correct wear can be automatically recognized, but the manufacturing precision requirements increase
Solution Approach 1:
The patent uses the existing piezoelectric film sensor in the earphone for dual purposes: sound reception and ear structure detection. This eliminates the need for separate dedicated sensors, reducing manufacturing precision requirements for sensor placement while maintaining high detection accuracy for ear structure 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
Ensures users can enjoy high-quality sound even when wearing earphones incorrectly, improving auditory experience by automatically correcting sound channel alignment and prompting re-wearing.
Implementation Method 1
the earphone includes a piezoelectric film sensor, the piezoelectric film sensor includes an audio control circuit
Data Source
AI summary
The present invention provides an earphone recognition method and an earphone recognition apparatus. The earphone recognition method includes: an acquisition step: when a user wears the earphone, acquiring left and/or right ear structure information, collected by the earphone, of the user; and a sending step: sending the left and/or right ear structure information to a terminal, so that the terminal determines whether the user correctly wears the earphone according to whether the left and/or right ear structure information matches left and/or right ear structure information acquired when the user correctly wears the earphone for the first time. By means of the solutions of the present invention, even though the user wears the earphone conversely, the user can still hear proper high-quality sound, and further, the listening experience of the user is improved.