Adjustable Front Vent Earpiece for Occlusion and Microphonics Control
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Solution Overview
Problem
In-ear canal headphones suffer from the 'occlusion effect' and 'microphonics' due to their sealing nature, which can amplify internal sounds and generate noise from external contact, and users need a way to allow ambient sounds for safety while also controlling bass response.
Innovation Solution
An earpiece with a mechanically adjustable front vent system, allowing users to control the amount of ambient sound entry through a rotatable adjusting module that opens or closes sound vents, affecting both noise isolation and bass response.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the earpiece uses a sealing design to prevent ambient sound from entering the ear canal, then noise isolation is improved, but the occlusion effect and microphonics are amplified
Solution Approach 1:
The earpiece is divided into multiple functional components: a sealed in-ear unit for noise isolation and a separate venting system with adjustable front vents. This segmentation allows the sealed portion to provide noise isolation while the venting portion can be independently controlled to release internal sounds and reduce occlusion effect and microphonics.
Solution Approach 2:
The front vents are designed to be mechanically adjustable by the user, allowing dynamic control of the venting aperture. Users can open the vents to reduce occlusion effect and microphonics, or close them to enhance noise isolation, making the system adaptable to different listening conditions and user preferences.
2Object-affected harmful factors
If the earpiece is fully sealed to maximize noise isolation, then ambient sound blocking is improved, but users cannot hear outdoor hazards
Solution Approach 1:
The adjustable front vent system enables users to dynamically switch between sealed and vented modes. When outdoor safety is a concern, users can open the vents to allow ambient sounds through, maintaining awareness of outdoor hazards while still benefiting from the earpiece's audio output.
Solution Approach 2:
The system allows users to change the venting parameter (aperture size) to control the balance between noise isolation and ambient sound awareness. By adjusting the front vents, users can modify the acoustic seal strength to match different environmental conditions and safety requirements.
3Object-generated harmful factors
If the earpiece uses a fixed sealed design, then bass response is maximized, but users lose control over noise isolation and bass response
Solution Approach 1:
The mechanically adjustable front vents provide users with direct control over the acoustic seal, enabling them to optimize both noise isolation and bass response according to their preferences and listening environments. This dynamic adjustment capability transforms a fixed-performance device into an adaptable system.
Solution Approach 2:
By allowing users to adjust the vent aperture size, the system enables parameter changes in the acoustic seal strength, which directly affects both noise isolation performance and bass response characteristics. Users can fine-tune these parameters to achieve their desired audio experience.
Data Source
AI summary
An earpiece is disclosed. The earpiece includes a housing forming a volume therein, a number of sound holes arranged in the front end and rear end of the housing, a sound generator accommodated in the volume, an ear gel attached to a front end of the housing, a wire electrically connected to the sound generator, wherein a adjusting module is assembled to the housing, a plurality of front vents are disposed on the front end of the housing, and the amount of the front vents communicating with the volume is mechanically altered by the adjusting module.