Acoustic panel
The sound-absorbing sheet with compartmentalized chambers and resonant cavities addresses the space and cost issues of existing devices, providing efficient sound absorption with a thin, customizable design.
TWI934771BActive Publication Date: 2026-08-01NAT CHENG KUNG UNIV
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Patent Information
- Application Number
- TW114133870
- Authority / Receiving Office
- TW · TW
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2025-09-04
- Publication Date
- 2026-08-01
- Estimated Expiration
- 2045-09-03
AI Technical Summary
Technical Problem
Current sound-absorbing devices, such as porous panels, resonant cavity structures, and active noise absorbers, are bulky, require significant space, or have complex and costly configurations, making them impractical for limited spaces and high-volume manufacturing.
Method used
A sound-absorbing sheet with a compartmentalized structure featuring sound-absorbing chambers and interconnected resonant cavities, utilizing Holmholtz resonance principles, which can be manufactured using 3D printing or mold pressing, reducing thickness and cost.
Benefits of technology
The sheet achieves effective sound absorption in limited spaces with a simplified structure, reduced thickness, and lower manufacturing costs, expanding its application range.
✦ Generated by Eureka AI based on patent content.
Abstract
This invention relates to a sound-absorbing sheet, which consists of a plurality of sound-absorbing chambers formed by a partition structure inside the sound-absorbing disc body. The side plates of the sound-absorbing disc body have sound-absorbing holes at positions corresponding to these chambers. Each chamber contains a sound-absorbing structure, which forms a sequentially connected entrance channel, a first resonant cavity, an extension channel, and a second resonant cavity. The entrance channel connects to the sound-absorbing holes. The sound-absorbing sheet, through the partition structure and the sound-absorbing structures, forms a series of spatial structures within the sound-absorbing disc body, enabling it to achieve excellent sound absorption. Furthermore, the overall structure of the sound-absorbing sheet is simplified, effectively improving manufacturing convenience and reducing manufacturing costs. It also significantly reduces the overall thickness of the sound-absorbing sheet, broadening its applicability.
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