Detachable Porous Windscreen for Earplug Microphone Noise Reduction
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Solution Overview
Problem
Conventional electronic earplugs face difficulties in windy environments due to noise interference from moving air, which hinders the user's ability to understand ambient sounds effectively.
Innovation Solution
A detachable porous windscreen is coupled to the microphone inlet of the earplug housing, providing an acoustic seal and minimizing wind noise interference while allowing ambient sound to be received, with a design that includes ridged grooves for attachment and a configuration that maintains a minimum distance between the acoustic inlet and the outer surface to maximize sound transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a microphone inlet is provided in the earplug housing to receive ambient sound, then the user can understand ambient sounds, but wind noise enters the microphone inlet causing interference in windy environments
Solution Approach 1:
A windscreen is introduced as an intermediary component between the external environment and the microphone inlet. The windscreen selectively transmits ambient sound frequencies while blocking wind noise, acting as a mediator that allows desirable sound transmission while preventing harmful wind interference from reaching the microphone.
Solution Approach 2:
The windscreen is constructed from porous material that allows ambient sound to pass through while filtering out wind noise. The porous structure enables selective acoustic transmission based on frequency and particle size, permitting voice frequencies to pass while blocking the higher energy wind particles.
2Ease of operation
If the windscreen is made detachable with attachment mechanism, then the windscreen can be easily installed and removed, but the device complexity increases
Solution Approach 1:
The windscreen system is divided into separate components: the windscreen itself and the attachment mechanism integrated with the earplug housing. This segmentation allows the windscreen to be easily attached and detached without requiring complex assembly procedures, as each component can be independently manufactured and optimized.
Solution Approach 2:
The attachment mechanism serves multiple functions: it secures the windscreen to the housing, provides alignment features through ridged grooves, and enables easy removal. By integrating these functions into a single mechanism, the overall complexity is reduced compared to using separate components for each function.
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
The windscreen effectively reduces wind noise, enhancing the user's ability to understand ambient sounds in windy conditions by creating an acoustic seal and optimizing sound transmission through the earplug.
Implementation Method 1
a porous windscreen is detachably coupled to the housing surrounding a perimeter of the microphone inlet
Data Source
AI summary
Certain embodiments provide an in-the-ear device. The in-the-ear device includes a housing including a microphone inlet. The in-the-ear device also includes a microphone and a windscreen. The microphone is disposed within the housing adjacent to the microphone inlet. The windscreen includes a porous screen and an attachment mechanism coupled to the porous screen. The attachment mechanism is configured to detachably couple to the housing surrounding a perimeter of the microphone inlet such that an acoustic seal is formed between the windscreen and the housing.