Sound-Absorbing Mobile Terminal Booth for Reverberation Control
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Solution Overview
Problem
Existing mobile terminal booths in public areas fail to provide a comfortable and quiet space for phone conversations due to reverberating noise, leading to difficulties in hearing and being overheard, and are often cumbersome and costly to install.
Innovation Solution
A mobile terminal booth equipped with a sound absorbing unit made of materials like needle felt, glass wool, and polyurethane, arranged in a laminate structure with a viscous adhesive and vinyl film, which absorbs sound waves and reduces reverberation, while being lightweight and easy to install.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a confined box structure with transparent walls is used to create a noiseless space, then sound isolation is improved, but reverberation increases and the space feels enclosed and uncomfortable
Solution Approach 1:
The patent applies porous sound-absorbing materials (such as acoustic foam or mineral wool) to the interior surfaces of the booth. These materials have interconnected pores that allow sound waves to enter and be absorbed through friction and viscous losses, converting acoustic energy into heat. This reduces reverberation while maintaining the enclosed structure's noise isolation capabilities.
Solution Approach 2:
The patent uses composite wall structures combining transparent panels (for visual openness) with sound-absorbing layers (for reverberation control). The composite construction integrates materials with different properties: the transparent glass or acrylic provides structural integrity and visual connection to the outside, while the attached porous acoustic materials absorb reverberating sounds, resolving the contradiction between enclosure and comfort.
2Object-affected harmful factors
If a confined box structure with door is used to eliminate sound passage, then noise isolation is improved, but the booth becomes heavy and installation becomes difficult
Solution Approach 1:
The patent removes the door from the booth structure entirely. Instead of providing access through a door that would compromise sound isolation and add weight, the design uses full-height transparent walls that allow visual connection while maintaining acoustic enclosure. The booth is positioned and oriented to provide user access without requiring a door opening, thus eliminating the heavy door component while preserving noise isolation.
Solution Approach 2:
The patent employs thin, lightweight transparent panels (such as acrylic or tempered glass) that provide sufficient structural integrity and sound isolation without the weight of traditional door assemblies. These thin film-like structures achieve the required acoustic performance through their continuity and sealing, eliminating the need for heavy mechanical door systems.
3Object-affected harmful factors
If a confined box structure is used to create enclosed space, then noise isolation is improved, but production cost increases
Solution Approach 1:
The patent divides the booth into modular segments that can be manufactured separately and assembled on-site. Each module consists of standardized transparent panels and sound-absorbing components that can be produced using conventional fabrication methods. This segmentation reduces manufacturing complexity and cost compared to building a complete enclosed box as a single unit, while maintaining effective noise isolation through the assembled structure's continuous sealing.
4Illumination intensity
If transparent walls are used to give open feeling, then visual openness is improved, but sound isolation deteriorates
Solution Approach 1:
The patent creates composite wall assemblies where transparent panels are combined with sound-absorbing materials. The transparent portion maintains visual openness and natural light transmission, while the attached acoustic materials (such as porous foam or fabric-covered panels) provide sound isolation. This composite construction allows simultaneous achievement of both visual transparency and acoustic privacy, as the sound-absorbing layers are integrated without blocking the visual view through the transparent sections.
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 booth effectively reduces reverberating noise, allowing for clear conversations without being overheard, providing a comfortable and private space with improved sound absorption capabilities and reduced installation costs.
Implementation Method 1
a sound absorbing unit which is placed in a public place and partially partitions a space... said sound absorbing unit is provided with a sound controlling member
Data Source
AI summary
A mobile terminal booth which provides an area where a mobile terminal can be comfortably used is described. This mobile terminal booth is provided with a sound absorbing unit which is placed in a public place and partially partitions a space as viewed from the above where a user of a mobile terminal can have a telephone conversation. The sound absorbing unit is provided with an entrance which is always opened without any closing member. The sound absorbing unit is made of a laminate consisting of a plurality of sound absorbing layers, and serves as a sound controlling means. Particularly, the sound absorbing layers are joined together in the form of the laminate with a viscous adhesive which does not solidify after formation of said laminate, maintains its viscosity when the mobile terminal booth is used and functions as said sound controlling member.