Phase-Adjusting Sound Insulator for Multi-Band Noise Attenuation
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Solution Overview
Problem
Conventional sound insulators struggle to effectively attenuate sounds across various frequency bands due to their fixed frequency attenuation capabilities.
Innovation Solution
A sound insulator design featuring a phase adjustment portion that alters the phase of sound waves by utilizing a bypass groove system within a cylindrical member, allowing for adjustable bypass lengths to change the frequency band of attenuated sounds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a conventional sound insulator with fixed transmission regions is used, then the structure is simple, but the frequency band of attenuated sounds is limited
Solution Approach 1:
The patent applies the dynamics principle by making the bypass groove length adjustable, allowing the sound insulator to dynamically adapt to different frequency bands. The bypass groove can be configured in multiple lengths (first, second, and third lengths) to attenuate different frequency ranges, transforming a static structure into a dynamically adjustable one that can respond to varying sound attenuation requirements.
Solution Approach 2:
The patent implements parameter changes by varying the length of the bypass groove to change the attenuation characteristics. By adjusting the bypass groove length parameter, the sound insulator can target different frequency bands for attenuation, effectively changing its operational parameters to suit different noise control scenarios without requiring complete structural redesign.
2Object-affected harmful factors
If the bypass groove length is increased to attenuate lower frequencies, then the low frequency attenuation improves, but the device length increases
Solution Approach 1:
The patent applies segmentation by dividing the bypass groove into multiple discrete length configurations (first length, second length, third length) rather than requiring a single continuous long groove. This segmentation allows the system to achieve low frequency attenuation through multiple shorter segments combined, or through selective activation of different groove portions, reducing the need for a single excessively long groove structure.
Solution Approach 2:
The patent implements nesting by configuring multiple bypass grooves of different lengths within the same structural space. The first, second, and third bypass grooves can be arranged concentrically or in nested configurations, allowing shorter grooves to be contained within or alongside longer groove paths, thereby achieving multiple attenuation functions without proportionally increasing the overall device footprint.
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 sound insulator can attenuate sounds in multiple frequency bands by adjusting the phase of sound waves through a bypass groove, enhancing its sound attenuation capabilities across a wider range.
Implementation Method 1
a phase adjustment portion that attenuates the sound waves corresponding to a frequency of the sound waves whose phase is changed among the sound waves transmitted through the transmission space by changing the phase of a part of the sound waves transmitted through the transmission space
Implementation Method 2
The phase adjustment portion changes a frequency band of the sound wave whose phase is to be changed
Data Source
AI summary
A sound insulator includes the space forming portion which have an introduction portion that forms a transmission space for transmitting sound waves and introduces sound waves into the transmission space and a discharge portion for guiding the sound waves introduced into the transmission space to the outside of the transmission space. The sound insulator includes a phase adjustment portion that attenuates sound waves corresponding to the frequency of the sound waves whose phases have been changed among the sound waves transmitted through the transmission space by changing the phase of some of the sound waves transmitted through the transmission space. The phase adjustment portion changes the frequency band of the sound wave whose phase is to be changed.