Helmholtz resonance acoustic board

A technology of resonant sound absorption and resonant body, which is applied in the direction of building components, sound insulation, covering/lining, etc., and can solve the problems of narrow resonance absorption frequency range and reduced sound absorption coefficient

Inactive Publication Date: 2007-07-25
陈吉轩
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Helmholtz resonance sound absorber that is often used now is a single-layer sound-absorbing board with perforations or slots on a flat plate. It is installed at a certain distance on the back wall of the board to form a cavity V, but the resonanc

Method used

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  • Helmholtz resonance acoustic board
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Embodiment Construction

[0014] The present invention will now be described and explained in further detail in conjunction with the embodiments and the accompanying drawings.

[0015] Referring to FIG. 1 , the first embodiment of the present invention provides a Helmholtz resonance sound-absorbing panel, which includes a rectangular parallelepiped substrate 1, which is a particle board, and has circular through holes running through the front and rear in the lateral direction of the substrate. 2. A circular drill hole 3 is spaced on the upper part of the substrate surface, and is arranged in a row along the axis direction of the through hole. The drill hole 3 is vertically connected to one side of the through hole 2, forming a parallel Helmholtz. Resonator. Since holes with different apertures can be used for the holes 3 on the same substrate, noises of sound waves of different frequencies can be absorbed, so as to achieve a better sound absorption effect. At the same time, the way that circular thro...

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Abstract

The present invention relates to a sound-absorbing plate for making indoor sound quality treatment, in the concrete, it discloses a kind of Helmholtz resonance sound-absorbing plate. It is characterized by that it is a rectangular baseplate, on the transverse direction of the described baseplate are cut several circular through holes, the longitudinal direction portion of said baseplate is equipped with several drilled holes or narrow seams, these drilled holes or narrow seams are vertically connected with the transverse circular through holes so as to form several Helmholtz resonance bodies with good sound-absorbing effect.

Description

technical field [0001] The invention relates to a sound-absorbing board for indoor sound quality processing, more particularly to a Helmholtz resonance sound-absorbing board with a new structure Background technique [0002] The sound-absorbing panel is a combination of noise reduction and decoration. It is used in multi-functional halls, auditoriums, recording halls, theaters, gymnasiums and even homes. It is used for noise reduction and decorative effects, and is deeply loved by modern people. The current sound-absorbing panels generally contain a typical Helmholtz resonator structure, as shown in Figure 6, which is composed of a cavity with a volume V and a neck tube that communicates with the outside world. The Helmholtz resonant sound-absorbing body that is often used now is a single-layer sound-absorbing board with perforations or slots on a flat plate. The absorption frequency range is very narrow. Generally, there is only a large absorption at a certain fixed resona...

Claims

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Application Information

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IPC IPC(8): E04B1/86E04F13/075
Inventor 陈吉轩
Owner 陈吉轩
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