A unit sound-absorbing panel device based on the sound-absorbing self-balancing principle

Abstract

The invention relates to a unit acoustic panel absorber device based on a sound absorption and production self-balancing principle. The unit acoustic panel absorber device based on the sound absorption and production self-balancing principle comprises an ultra-micropore sound absorption panel, side plates and a sound absorption back plate. Edges of the ultra-micropore sound absorption panel are connected with the sound absorption back plate through the side plates so as to form a sound absorption resonant cavity. The unit acoustic panel absorber device is characterized in that the ultra-micropore sound absorption panel is respectively provided with a sound sensor and a loudspeaker with a spectral analysis function; and the sound sensor is in signal connection with the loudspeaker with the spectral analysis function. Comprehensive methods such as a sound wave positive and negative phase superposition cancellation technology are adopted. The unit acoustic panel absorber device has the advantages of wide sound absorption bandwidth, good noise reduction effect, simple structure and easiness, convenience and reliability in technological manufacturing, assembling and use. The unit acoustic panel absorber device is suitable for places in need of ceiling and wall surface decoration in various buildings, and is particularly suitable for places in need of strong sound absorption and noise reduction.

Description

technical field [0001] The invention relates to a sound-absorbing and noise-reducing equipment, in particular to a unit sound-absorbing panel device based on the sound-absorbing self-balancing principle used for eliminating the reverberation sound field indoors of a building. Background technique [0002] In the construction of modern cities, the requirements for the indoor acoustic environment of large and medium-sized public buildings are getting higher and higher, especially for the interior decoration materials of large and medium-sized public buildings, they need to have both beautiful decorative functions and excellent acoustics Features. And the interior decoration materials of traditional large and medium-sized public buildings generally use aluminum bar-shaped, aluminum square or aluminum hanging sheet-shaped ceilings and wall panels with apertures of Φ1-3 mm. Although these interior decoration materials have It has a certain sound absorption performance, but its a...

AI Technical Summary

Problems solved by technology

Although the ultra-microporous sound-absorbing body is conducive to improving the sound-absorbing performance, it still has the following disadvantages: Although the structure of the internal cavity is changed with the sound-absorbing slant or V-shaped sound-absorbing wedge, the gradual cavity formed by the slant To a large extent, the width of the sound absorption frequency band is wider, but due to the reduction of the total sound absorption area of ​​each frequency band, the sound absorption coefficient of each frequency band has an overall downward trend. Therefore, the average sound absorption coefficient does not change. not tall

Although the sound-absorbing flap has good acoustic performance, it still has the following shortcomings: First, affected by the size of the product, it has a good sound-absorbing effect in the middle and high frequencies, but the sound-absorbing effect is relatively poor in the low-frequency band ; Second, the sound absorption performance can only have a good sound absorption effect in this specific range, and the sound absorption effect in other frequency bands is poor, and the frequency bandwidth is relatively narrow

Although the sound-absorbing panel can use the sealed cavity sound-absorbing back plate to resonate and absorb sound without adding any fiber materials, it can achieve a better sound-absorbing effect, but it still has the following shortcomings: First, there are still The single-layer sound-absorbing panel has a relatively narrow sound-absorbing frequency band, and it cannot achieve a good sound-absorbing effect in each frequency range within a wide frequency band; Sound absorption, but from the analysis of the overall installation structure compared with the principle of thin plate resonance sound absorption, it is found that the size behind the airtight cavity is relatively large, and the effect of sound pressure energy is difficult to cause resonance of the thin plate, and the resonance sound absorption effect of the thin plate will be relatively large. limited

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