Resonance Absorber Wall Structure for Low-Frequency Soundproofing
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Solution Overview
Problem
Existing construction elements fail to provide effective soundproofing across different types of walls due to the need for specific dynamic absorbers tailored to each wall type, and there is a challenge in optimizing the number of absorbers for optimal acoustic insulation while controlling costs.
Innovation Solution
A versatile resonance absorber designed to adapt to different wall types by alternately adopting distinct resonance frequencies, and a construction element optimized with a controlled number of absorbers that represent 2-25% of the total mass, strategically placed to minimize acoustic transparency at low frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different types of dynamic absorbers are used for different wall types, then the acoustic insulation performance is optimized for each specific wall, but the device complexity and variety of components increases
Solution Approach 1:
The patent applies universality by designing a single standardized resonance absorber that can be used across multiple wall types (single wall, double wall, partition walls). The absorber achieves this through adjustable resonance frequencies and adaptable mounting configurations, eliminating the need for different absorber designs for different wall structures while maintaining optimized acoustic insulation performance for each specific application
Solution Approach 2:
The patent applies dynamics by making the resonance frequency of the absorber adjustable rather than fixed. The blade's resonance frequency can be modified by changing its length or stiffness, allowing the same absorber design to be tuned to match the breathing frequency of different wall types. This dynamic adjustment capability enables one absorber design to serve multiple functions across varying acoustic environments
2Reliability
If the number of resonance absorbers is increased to improve acoustic insulation, then the soundproofing performance improves, but the cost and weight of the construction element increases
Solution Approach 1:
The patent applies parameter changes by optimizing the resonance frequency of each absorber to precisely match the breathing frequency of the wall (typically 50-150 Hz). By tuning the absorbers to the exact problematic frequency rather than using multiple absorbers across a broad frequency range, the system achieves effective soundproofing with fewer, lighter components. The blade dimensions and mass are specifically calculated to achieve the target resonance frequency with minimal material
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 solution enables effective soundproofing across various wall types and optimizes acoustic insulation performance while maintaining a favorable cost-to-insulation ratio by using a versatile resonance absorber and strategically placing absorbers within the construction element.
Implementation Method 1
the resonance absorber is configured to alternately present at least one first resonant frequency and a second resonant frequency, distinct from the first
Implementation Method 2
The damping or absorption efficiency of these wall vibrations by the dynamic absorber depends on the match between the resonant frequency of the dynamic absorber and the breathing frequency that characterizes the wall
Data Source
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AI summary
The invention relates to a construction element (1) comprising at least one construction wall (2a, 2b) and a plurality of resonance absorbers (3) each comprising at least one blade (100), a support (200) and a weight (300), the blade (100) including an intermediate portion (108) capable of oscillating about an equilibrium position, the support (200) is configured to hold the blade (100) and the support (200) being fixed to the construction wall (2a, 2b), the weight (300) being carried by the intermediate portion of the blade (100), characterized in that a mass of the plurality of resonance absorbers (3) represents 2 to 25% of a total mass of the construction element (1).