3D Five-Channel Stereo Earphone Acoustic Frame Design
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Solution Overview
Problem
Current 2-channel stereo headphones cannot reproduce the 5.1-channel stereo sound effectively without significant cost increases due to the need for complex electronic circuits, which compromises market competitiveness and sound quality.
Innovation Solution
A 3D five-channel stereo earphone design featuring a frame with mutually isolated output channels and varying output holes that divide sound into five different frequency divisions, allowing for the reproduction of 5.1-channel stereo sound without electronic circuits, using a physical structure that includes a rear housing, frame, and loudspeaker sealed in a cavity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If electronic circuits are added to reproduce 5.1-channel stereo sound, then sound quality is improved, but manufacturing cost and device complexity increase significantly
Solution Approach 1:
The patent replaces electronic circuits with a purely mechanical acoustic system. The frame structure with multiple isolated channels, varying path lengths, and different aperture sizes physically separates and processes sound frequencies mechanically, eliminating the need for electronic components while achieving 5.1-channel stereo sound reproduction.
Solution Approach 2:
The frame is divided into multiple isolated channels (first through fifth channels) that separately process different sound frequencies. Each channel has its own path from input to output holes, allowing independent acoustic processing without electronic intervention, thereby achieving channel separation through physical structure alone.
2Reliability
If electronic circuits are added to reproduce 5.1-channel stereo sound, then sound quality is improved, but manufacturing cost increases
Solution Approach 1:
By substituting electronic circuits with a mechanical acoustic structure, the patent eliminates expensive electronic components, circuit boards, and associated assembly processes. The frame with its integrated channels and sound processing features can be manufactured as a single structural component, significantly reducing manufacturing costs while maintaining sound quality.
3Reliability
If multiple isolated channels are created in the frame, then 5.1-channel stereo sound is achieved, but frame complexity increases
Solution Approach 1:
The patent merges multiple acoustic channels into a single integrated frame structure. The first through fifth channels are formed as part of the frame itself, with input holes, internal passages, and output holes all incorporated into one structural component. This consolidation achieves complex acoustic functionality without proportionally increasing overall device complexity.
Solution Approach 2:
The frame serves multiple functions simultaneously: it provides structural support for the earphone, creates isolated acoustic channels, defines sound paths with varying lengths, controls sound output through different aperture sizes, and separates frequencies. This multi-functionality reduces the need for additional components, offsetting the complexity of the channel structure.
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 design achieves a broader range of sound effects with five different levels of pitches, providing a simulated 5.1-channel stereo sound and ideal 3D effect, enhancing acoustic quality and reducing manufacturing costs while maintaining market competitiveness.
Implementation Method 1
a loudspeaker mounted at a bottom of the frame
Implementation Method 2
the output channels having output holes disposed on an upper surface of the frame, and the vertical distances between the output holes and the output are different... the five output holes also differ in apertures and dimensions
Data Source
AI summary
A 3D five-channel stereo earphone, comprising: a rear housing, a frame installed on the rear housing, a loudspeaker mounted at a bottom of the frame, a front housing installed on the rear housing; the frame and loudspeaker being sealed and installed in a cavity between the rear housing and the front housing; the front housing having an output; the frame including several mutually isolated output channels connected to the output; the output channels having input holes disposed at the bottom of the frames and on the same horizontal plane; the output channels having output holes disposed on an upper surface of the frame, and the vertical distances between the output holes and the output are different; the headphone enables the optimum sound effects, acoustic quality, stimulated 3D sound effects and the 5.1-channel stereo sound, without adding any electronic circuits or applications.