Hearing Device Tether Acoustic Decoupling Noise Reduction
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Solution Overview
Problem
Conventional hearing protective and noise attenuating devices often fail to effectively prevent unwanted sound transmission through tethers, which can be perceived by users due to consistent shape and material construction, leading to noise interference.
Innovation Solution
A tether with acoustic decoupling sections proximate the ends and a substantially straight intermediate section, featuring differing acoustic impedance values due to variations in shape, size, material, and flexibility, reduces sound transmission by breaking up sound energy before it reaches the hearing devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a tether with consistent shape and material construction is used to connect hearing devices, then the tether provides structural integrity and ease of manufacture, but sound energy is transmitted through the tether causing noise interference
Solution Approach 1:
The tether is segmented into multiple sections with different geometries (straight intermediate section, first acoustic decoupling section with first geometry, second acoustic decoupling section with second geometry). This segmentation breaks the continuous sound transmission path and creates acoustic impedance mismatches at each interface, reducing noise transmission while maintaining manufacturing feasibility through modular design
Solution Approach 2:
Different sections of the tether are given different local qualities: the intermediate section has a straight geometry for structural integrity, while the acoustic decoupling sections have specific geometries (such as spiral or zigzag patterns) designed to dissipate sound energy. Each section's geometry is optimized for its specific function, creating acoustic impedance variations that block noise transmission
2Object-affected harmful factors
If acoustic decoupling sections with different geometries are introduced into the tether, then noise transmission is reduced, but device complexity increases
Solution Approach 1:
The tether is divided into distinct functional segments: straight intermediate sections for structural support and acoustic decoupling sections with specific geometries for noise reduction. This segmentation allows each part to be optimized independently while maintaining overall system simplicity through clear functional separation
Solution Approach 2:
The acoustic decoupling sections incorporate curved or non-linear geometries (such as spiral or zigzag patterns) that effectively dissipate sound energy through repeated reflections and path lengthening. These geometric features reduce noise transmission without requiring additional components or complex assemblies
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 tether significantly reduces unwanted noise perception by users by efficiently breaking down sound energy at the acoustic decoupling sections, minimizing noise transmission through the tether and preventing interference.
Implementation Method 1
The tether includes a first acoustic decoupling section proximate the first end, a second acoustic decoupling section proximate the second end
Data Source
Figure 1A~1D
Figure 2A~2B
Figure 3
AI summary
A hearing article having an acoustic decoupling section is provided. In an exemplary embodiment, a hearing article described herein includes comprises first and second hearing devices, a tether having a first end attached to the first hearing device and a second end attached to a second hearing device, wherein the tether includes a first acoustic decoupling section proximate the first end, a second acoustic decoupling section proximate the second end, and a substantially straight intermediate section between the first and second acoustic decoupling sections, the first and second acoustic decoupling sections comprising first and second predetermined shapes, and wherein the tether has a solid cross-section and is non-metallic and does not include a metallic wire core.