Air Flow Control Valve for TWS Earpiece Noise Management
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Solution Overview
Problem
True wireless stereo (TWS) earpieces face challenges in maintaining sound quality due to external noise interference, as existing solutions rely on electronic elements and fail to effectively block or allow external sound, leading to poor voice recognition and discomfort from air flow issues.
Innovation Solution
An air flow control valve structure with multiple vent holes and valves that can be selectively opened or closed to control external sound, featuring a housing design with independent sound emission and microphone sound inlets, and air flow control valves to manage sound flow, allowing for closed, half-open, or fully open states to block or allow external noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If air flow is blocked to prevent external noise from entering the eardrum, then sound pressure and TWS functionality are improved, but the user feels stuffy and discomfort increases
Solution Approach 1:
The patent implements a movable valve structure that can dynamically switch between open and closed states. The valve is connected to a spring mechanism that allows it to move between positions, enabling the system to adapt between blocking external noise (closed state for TWS functionality) and allowing air flow (open state to prevent stuffiness). This dynamic adjustment resolves the contradiction by making the air flow control adaptable rather than fixed.
2Object-affected harmful factors
If air flow is allowed to prevent stuffiness, then user comfort is improved, but external sound easily enters the eardrum and interferes with sound pressure and TWS functionality
Solution Approach 1:
The movable valve mechanism allows the system to switch between states: when opened, air flow is permitted for user comfort; when closed, external sound is blocked for TWS functionality. The spring-connected valve provides automatic or controlled movement between these states, enabling the system to resolve the contradiction between comfort and functionality through dynamic state changes rather than a fixed configuration.
3Measurement precision
If air flow control valves are added to manage external noise, then voice recognition and sound quality are improved, but device complexity increases
Solution Approach 1:
The valve structure incorporates a spring mechanism that provides automatic operation. The spring can automatically move the valve between open and closed states based on pressure differential or pre-set conditions, reducing the need for complex electronic control systems. This self-service mechanism achieves voice recognition improvement through physical automation rather than complex electronic control, thereby limiting the increase in device complexity.
4Object-affected harmful factors
If electronic elements such as filters and resistors are added to control external noise, then noise cancellation is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The patent replaces electronic noise control elements (filters and resistors) with a mechanical valve structure. The valve physically blocks or allows air flow through acoustic pathways using mechanical movement rather than electronic signal processing. This substitution achieves external noise control through a simpler mechanical system, avoiding the complexity and manufacturing costs associated with electronic components while maintaining effective noise management.
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 effectively blocks external noise when needed, ensuring excellent voice recognition and sound quality, while allowing external sound when required, improving the overall TWS experience by independently managing sound emission and microphone sound paths.
Implementation Method 1
an air flow control valve configured to selectively open and close a passage and adjust air flow in order to block or allow external sound
Implementation Method 2
the partition forms a channel shape transmitting a speaker's voice to the microphone, and provides a microphone sound inlet portion independent of the sound emission portion
Data Source
AI summary
The present invention provides an audio device that can selectively allow and block the vent flow of external sound using an air flow control valve mechanism and can finely control the amount of opening.