Dynamic Loudspeaker Grille with Rotating Perforations
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Solution Overview
Problem
Conventional loudspeaker grilles are static and lack dynamic visual appeal, failing to provide clear indication of the sound system's on/off state and optimal acoustic transparency.
Innovation Solution
A dynamic loudspeaker component comprising two grilles with different perforation arrangements, where one grille is rotatable relative to the other, creating a Moiré effect and aligning or misaligning perforations to indicate the sound system's status and optimize acoustic transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a conventional static grille is used, then the structure is simple and manufacturing is easy, but the visual appeal is lacking and the sound system status cannot be clearly indicated
Solution Approach 1:
The patent applies the dynamics principle by transforming the static grille into a dynamic system where one grille can rotate relative to the other. This rotation changes the alignment of perforations between the two grilles, creating different visual patterns and acoustic characteristics. The dynamic movement allows the grille to indicate sound system status (on/off) and provides visual appeal through changing patterns, while maintaining relatively simple manufacturing by using two separate grille components that can be produced independently.
Solution Approach 2:
The patent applies segmentation by dividing the single grille into two separate grille components with distinct perforation arrangements. This segmentation allows each grille to be manufactured independently using simple processes, while their combination creates the desired dynamic visual and acoustic effects. The two-grille structure enables relative rotation to change perforation alignment, providing status indication and visual appeal without complicating individual component manufacturing.
2Device complexity
If a static grille with fixed perforations is used, then the structure is simple, but the acoustic transparency cannot be optimized dynamically
Solution Approach 1:
The patent applies dynamics by enabling one grille to rotate relative to the other, dynamically changing the alignment of their perforations. When the perforations align, acoustic transparency is optimized for clear sound transmission. When misaligned, the acoustic transparency is reduced. This dynamic adjustment allows the system to optimize acoustic performance based on operational status without requiring complex active control mechanisms, maintaining relatively simple device structure.
3Loss of information
If additional components are added to indicate sound system status, then the status indication becomes clear, but the device complexity increases
Solution Approach 1:
The patent applies a visual indication principle similar to color changes by using the dynamic alignment pattern of perforations to indicate sound system status. When the grilles are aligned, it indicates one status (e.g., system on with optimal acoustic transparency). When misaligned, it indicates another status (e.g., system off or acoustic transparency reduced). This provides clear status indication using the existing grille structure itself, without adding separate indicator components, thereby maintaining relatively simple device complexity.
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 provides a visually engaging dynamic effect, clearly indicating the sound system's status and improving acoustic transparency by aligning perforations for optimal sound quality when the system is on, and misaligning for a muffled sound when off, without additional digital programming.
Implementation Method 1
the relative rotation between the second grille and the first grille creates a dynamic Moiré effect
Data Source
Figure 1
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Figure 3a~3f
AI summary
A dynamic arrangement for loudspeaker grilles is disclosed. A first perforated grille is operable to move with respect to a second perforated grille. The relative movement is controlled to cause the two respective sets of perforations to fall in or out of alignment as required, leading to advantageous effects such as different levels of acoustic transparency.