Earphone Acoustic Port Mesh for Sound Quality and In-Ear Sensing
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Solution Overview
Problem
Current wireless portable listening devices often compromise on acoustic performance and user experience, lacking advanced features that provide high-end sound quality and intuitive operation.
Innovation Solution
The development of portable wireless listening devices with innovative designs, including a mesh-covered acoustic port, optical sensors for in-ear detection, and hydrophobic coatings for the battery, along with a charging case that supports wireless charging and secure storage, enhances acoustic performance and user experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless portable listening devices use conventional designs, then device simplicity is maintained, but acoustic performance and user experience are compromised
Solution Approach 1:
The device is divided into distinct functional modules: a housing containing the audio driver, a separate stem portion with optical sensors, and a charging case. This segmentation allows each component to be optimized for its specific function while maintaining overall device performance and user experience.
Solution Approach 2:
The optical sensors are integrated within the stem portion of the housing, and the entire listening device nests within a charging case that provides both storage and power replenishment. This nested structure maximizes functionality within compact dimensions.
2Ease of operation
If optical sensors are added for in-ear detection, then user experience is enhanced, but device complexity increases
Solution Approach 1:
The optical sensors automatically detect whether the listening device is properly inserted in the user's ear and enable or disable audio playback accordingly. This self-service functionality eliminates the need for manual user input while enhancing convenience.
Solution Approach 2:
Manual operations for enabling/disabling audio are replaced by optical detection systems that automatically sense ear insertion status. This substitution of mechanical/user-driven operations with optical sensing enhances ease of operation.
3Shape
If mesh is recessed from the acoustic port opening, then exterior surface aesthetics are improved, but acoustic delivery may be affected
Solution Approach 1:
The mesh is selectively recessed only at the exterior opening while maintaining optimal positioning within the acoustic port to ensure proper sound delivery. This localized modification achieves aesthetic improvement without compromising acoustic performance.
Solution Approach 2:
The mesh is positioned in a recessed dimension relative to the exterior surface, creating a stepped configuration that improves aesthetics while maintaining the acoustic port's functional dimensions for optimal sound delivery.
4Reliability
If hydrophobic coating is applied to battery, then battery protection is improved, but manufacturing complexity increases
Solution Approach 1:
The battery is coated with a hydrophobic material to create a composite structure that combines the electrical functionality of the battery with the protective properties of the hydrophobic coating, providing enhanced protection against moisture and corrosion.
Solution Approach 2:
The surface properties of the battery are modified by applying a hydrophobic coating that changes the surface energy parameters, making the battery resistant to moisture adhesion and chemical corrosion while maintaining electrical performance.
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
These devices deliver improved audio quality and a more comfortable, hands-free user experience by optimizing sound delivery and battery protection, while the charging case ensures convenient and secure storage and charging.
Implementation Method 1
an optical sensor configured to detect reflected light emitted by the light emitter
Implementation Method 2
a hydrophobic coating formed over an exterior surface of the battery
Data Source
AI summary
An earphone comprising: a device housing that defines an internal cavity within the device housing; an acoustic port formed through a wall of the device housing and having an opening at an exterior surface of the device housing; an audio driver disposed within the device housing and aligned to emit sound through the acoustic port; and a mesh disposed within the acoustic port and having an outer periphery spaced apart from the device housing wall, wherein the mesh forms a portion of an exterior surface of the earphone that is recessed from the opening at the exterior surface of the device housing.