Receiver Module Integrated with Duct for Compact Earphone Acoustics
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Solution Overview
Problem
Open-type earphones with ducts face design and size issues due to the need for an elongated housing and increased overall size, which complicates sound pressure tuning and frequency characteristics, especially in the low frequency range.
Innovation Solution
A receiver module integrated with a duct is designed, where the duct is modularized within the receiver's structure, allowing for sound tuning without increasing the rear surface volume, with a back volume and communication holes that maintain constant sound pressure and improve low-frequency sound quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a duct is formed using a separate bracket at the rear space of the earphone, then sound pressure tuning and frequency characteristics are improved, but the overall size of the earphone increases and design flexibility is reduced
Solution Approach 1:
The duct is integrated directly into the housing structure, merging the duct function with the housing rather than using a separate bracket. This integration eliminates the need for additional rear space while maintaining sound pressure tuning capabilities, thereby improving low-frequency sound quality without increasing overall device volume
Solution Approach 2:
The housing serves multiple functions: it provides structural support, contains the receiver, and simultaneously forms the duct for sound pressure tuning. By making the housing multi-functional, the design eliminates the need for separate components that would increase device volume, achieving both compact size and improved acoustic performance
2Reliability
If a separate bracket is used to form the duct, then acoustic performance is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The duct-forming function is merged into the housing structure, reducing the number of separate components. This integration simplifies the overall device structure and reduces assembly complexity while maintaining the acoustic benefits of the duct for frequency characteristic tuning
Solution Approach 2:
The housing is designed with integrated duct structures that segment the internal space to create the necessary acoustic pathways. This segmentation approach allows complex acoustic functionality to be achieved through the housing geometry itself, rather than requiring separate bracket components
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 design enables compact device architecture, uniform sound characteristics, and improved low-frequency performance without the need for additional rear surface space, facilitating mass production and flexible design variations.
Implementation Method 1
a back volume communicating with the back hole of the receiver and an outside and amplifying sound through resonance
Data Source
AI summary
Disclosed is a receiver module integrated with a duct. The present disclosure provides a receiver module integrated with a duct in which a back volume and a duct are provided at an outer circumference of a frame of a receiver.