Design Standards And Environmental Protection Levels For Various Types Of Acoustic Panels

When installing Acoustic panels on substrates, they are classified into E0, E1, and E2 levels based on the amount of formaldehyde emitted by the substrate material. E0 level is the most environmentally friendly, followed by E1, and E2 has the highest formaldehyde emission. If directly used for indoor installation, E1 level is considered qualified, and Acoustic wedges are a special Acoustic structural material used for strong Acoustic fields. They are made of porous (or fibrous) materials that are molded and cut into conical or wedge-shaped Acoustic bodies, which are firm and not deformed. The Acoustic wedge is suitable for strong airflow environments, mainly targeting high-quality anechoic chambers. It is more effective in absorbing low frequencies, eliminating standing waves and achieving the requirement of eliminating echoes. The low cutoff frequency sound absorption coefficient is greater than 0.99. Compared with ordinary Acoustic wedges, V-shaped and W-shaped Acoustic wedges made of polyester have the characteristics of smaller footprint and more reasonable price.
1. Diffuser Acoustic panel:
In addition to all the functions of a planar Acoustic panel, a diffuser Acoustic panel can also conduct sound waves at different angles through its three-dimensional surface, eliminate blind spots in the diffusion process, improve sound quality, balance the sound, thin out accents, weaken high notes, and compensate for low notes.
Product structure of diffuser Acoustic panel:
A structural Acoustic material with a three-dimensional triangular or cylindrical groove on the front of the medium density fiberboard, a circular hole on the back, and a painted finish (color can be selected according to customer requirements), with fireproof Acoustic cloth attached to the back.
Application scope of diffuser Acoustic panel:
Television stations, cinemas, opera houses, concert halls, conference centers, sports halls, sound rooms, homes, shopping malls, hotels, karaoke bars, lounges, restaurants, etc.
2. Aluminum honeycomb perforated Acoustic panel:
The construction structure of aluminum honeycomb perforated Acoustic panels consists of perforated panels and perforated backboards, which are directly bonded to the aluminum honeycomb core with high-quality adhesives to form an aluminum honeycomb sandwich structure. A layer of Acoustic cloth is attached between the honeycomb core, panel, and backboard. Due to the honeycomb core inside the honeycomb aluminum plate being divided into numerous enclosed chambers, air flow is prevented, sound waves are obstructed, and the sound absorption coefficient is improved (up to 0.9 or above). At the same time, the strength of the board itself is increased, allowing for larger dimensions of individual boards and further increasing design freedom. According to indoor acoustic design, different perforation rates can be designed to control the sound absorption coefficient of the composite structure within a certain range, achieving both design effects and reasonable cost control. By controlling the perforation aperture and spacing, and changing the perforation rate according to customer requirements, the maximum perforation rate is less than 30%. The aperture is generally selected in specifications such as Φ 2.0, Φ 2.5, and Φ 3.0. The perforation requirements for the backboard are the same as those for the panel, and high-quality non-woven fabrics and other Acoustic materials are used for the Acoustic cloth.
3. Wooden perforated Acoustic board:
Kongmu Acoustic board has cylindrical holes that run through the front and back of the density board. A breathable backing material and Acoustic material that can absorb incoming and outgoing sound energy are pasted on the back of the density board to form a platform. The sound absorption mechanism is that there are a large number of tiny interconnected pores inside the material, and sound waves can penetrate deep into the material along these pores, generating friction with the material to convert sound energy into heat energy. The sound absorption characteristics of porous Acoustic materials are that the sound absorption coefficient gradually increases with the increase of frequency, which means that low-frequency absorption is not as good as high-frequency absorption. The sound absorption mechanism of ceilings or wall panels made of perforated wood Acoustic panels is thin plate resonance sound absorption. At the resonance frequency, a large amount of sound energy is absorbed due to the severe vibration of the thin plate. Thin plate resonance absorption mostly has good sound absorption performance at low frequencies:
(1) Large board surface and high flatness;
(2) The board has high strength and light weight;
(3) Excellent sound absorption effect, fire resistance, and waterproofing;
(4) Easy to install, each board can be disassembled and replaced separately;
(5) We can customize according to customer needs in terms of size, shape, surface treatment, and color to meet their personalized needs;