Sound Device Holder with Integrated Microphone for Noise Cancellation
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Solution Overview
Problem
Existing sound devices, particularly earphones, face challenges in achieving improved acoustic performance, minimal variation in sound quality, and enhanced sound quality in the high frequency band, while also incorporating an active noise cancellation function and simplifying the noise inflow path structure.
Innovation Solution
The sound device incorporates a transducer with a diaphragm, a nozzle spaced apart from the diaphragm, a holder positioned between the diaphragm and the nozzle, and a microphone coupled to the holder and positioned inside the nozzle. The holder features a bottom plate with a hole facing the diaphragm and a side wall extending along the rim of the bottom plate, coupled to the transducer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex noise inflow path structure is used to achieve active noise cancellation, then noise cancellation function is improved, but device complexity increases
Solution Approach 1:
The holder is divided into distinct functional components: a bottom plate with a through-hole for acoustic signal passage, a side wall for structural support and transducer coupling, and an integrated microphone mounting portion. This segmentation allows each component to perform its specific function efficiently while simplifying the overall noise inflow path structure.
Solution Approach 2:
The holder serves multiple functions simultaneously: it positions the microphone, supports the transducer, defines the acoustic path through its bottom plate hole, and provides structural integration between components. This multi-functionality reduces the need for separate dedicated parts, thereby simplifying the overall structure while maintaining noise cancellation capability.
2Adaptability or versatility
If multiple separate components are used for holder, bottom plate, and microphone mounting, then assembly flexibility is improved, but assembly convenience deteriorates
Solution Approach 1:
The holder integrates the bottom plate, side wall, and microphone mounting portion into a single unified component. This merging eliminates the need for separate assembly steps for these parts, directly improving assembly convenience while maintaining the necessary structural and functional requirements through its integrated design.
3Manufacturing precision
If the microphone is positioned outside the nozzle, then manufacturing precision requirements are reduced, but acoustic performance deteriorates
Solution Approach 1:
The microphone is nested within the nozzle structure, specifically positioned inside the nozzle at the tip of the holder's mounting portion. This nested arrangement ensures precise acoustic positioning for optimal performance while the integrated holder structure maintains manufacturing feasibility through its unified design that guides proper assembly.
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 configuration enhances acoustic performance, minimizes sound quality variation, improves high-frequency sound quality, and enables active noise cancellation, while also simplifying the noise inflow path and improving assembly convenience and reducing process defects.
Implementation Method 1
a transducer including a diaphragm
Implementation Method 2
a microphone coupled to the holder, and positioned inside the nozzle
Data Source
AI summary
A sound device includes a transducer including a diaphragm; a nozzle spaced apart from the diaphragm; a holder positioned between the diaphragm and the nozzle, and coupled to the transducer; and a microphone coupled to the holder, and positioned inside the nozzle, wherein the holder may include: a bottom plate facing the diaphragm, and spaced apart from the diaphragm, the bottom plate having a hole facing the diaphragm; and a side wall extending along a rim of the bottom plate, and coupled to the transducer.