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High and low frequency sound absorption components

A component and sound-absorbing technology, applied in the field of pseudo partitions, pseudo ceilings and pseudo walls, can solve problems such as limited micro-perforated sheets

Active Publication Date: 2021-11-16
J M 谢乐
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the absorbent area is still limited by the number of microperforated sheets

Method used

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  • High and low frequency sound absorption components
  • High and low frequency sound absorption components
  • High and low frequency sound absorption components

Examples

Experimental program
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Embodiment Construction

[0027] about figure 1 , describes the first embodiment of the sound absorbing assembly 1 (also simply referred to herein as the sound absorbing assembly 1 ), the shown assembly being installed on a false ceiling 50 . In order to avoid burdening the drawing, the means for fixing the sound-absorbing assembly to the false ceiling are not shown. They may comprise any suitable means known to those skilled in the art, such as, for example, hangers, or more complex systems such as those described in patent application FR 2867797.

[0028] The sound-absorbing assembly 1 comprises a flexible sheet closed at its ends by a first micro-perforated tensioned flexible sheet 3 and a second micro-perforated tensioned flexible sheet 4 (also referred to herein simply as the first and second flexible sheets 3, 4). Tubular body 2 (hereinafter also referred to as cavity body 2). The first and second flexible sheets 3, 4 are intended to absorb high frequency sound.

[0029] In the described embod...

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Abstract

The invention relates to a sound-absorbing component (1) comprising a body having a tubular shape ( 2), and at least one flat membrane arranged within the tubular body (2) between said flexible microperforated layers (3, 4) to define two spaces (6, 7) between said layers.

Description

technical field [0001] The present invention relates to the field of false partitions (fausse paroi), and in particular to the field of false ceilings and false walls. The invention relates more particularly to sound-absorbing assemblies intended to be placed in a room in order to control the acoustic behavior of the room. [0002] In particular, but not exclusively, the sound absorbing assembly is intended to be associated with a pseudo-baffle provided in a room. Background technique [0003] Traditionally, false partitions are made of frames that can be fixed to the walls or ceiling of a room, and flexible sheets tensioned over these frames. Despite the increasing use of pseudo-diaphragms in a variety of environments, pseudo-diaphragms made from tensioned flexible sheets have a major disadvantage, namely their poor acoustic performance. In fact, the tensioned sheet reflects the sound waves, thus producing a noticeable phenomenon of reverberation (or echo) of the sound wa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/84E04B1/86F21V33/00
CPCE04B1/84E04B1/86F21V33/00E04B2001/8461E04B9/001E04B2009/0492G10K11/168G10K11/172
Inventor J-M·谢乐
Owner J M 谢乐
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