Introduction of sound absorption materials:
In the application of sound absorption materials, resonance absorption structure or gradual transition layer structure are usually used. In order to improve the internal loss of materials, fillers containing a large number of bubbles are usually mixed into the materials or metal beads are added. The sound absorption materials are often used to improve the acoustic performance of the transducer array, such as the sound insulation decoupling between the elements of the transducer array, the anechoic covering treatment of the interior wall and components of the liquid filled transducer chamber, and the sound absorption veneer of the inner wall of the anechoic tank.
Sound absorbing material
The function of sound absorption material is as follows
1) Control reverberation time of hall sound quality
For example, concert hall, theater, recording room, studio, auditorium, conference room, multi-function hall, gymnasium, auditorium, etc., generally speaking, appropriate sound absorption materials will be selected to achieve the best reverberation time.
2) For some public transport buildings
For example, the waiting hall of some airports, the waiting room of the station, the waiting room of the wharf and so on. Due to the need to constantly broadcast the departure, arrival or delay time information of aircraft, vehicles and ships. Generally speaking, sound-absorbing board materials should be properly arranged like ceiling and wall surface. On the one hand, it can improve the clarity of broadcast information; on the other hand, it can reduce the noise of passengers, which can make the environment more quiet.
3) Eliminate the acoustic quality defects of auditorium, such as echo and sound focusing
When the sound path difference between the direct sound and the reflected sound reaches 17m, the time difference between the two sounds will reach 50ms, and the human ear can hear the echo. In some long halls, the reflected sound from the back wall is easy to produce echo near the seat area near the entrance of the platform. It can be eliminated by arranging strong sound-absorbing board material on the back wall. The arc-shaped back wall and dome roof of the building will also make the hall focus. If you want to keep the original indoor trapezoid, then you can use strong sound-absorbing materials on these interior surfaces to eliminate the focus generated in the hall.
4) Improve the sound insulation of light and thin board wall
Such as gypsum board, calcium silicate board, FC Board, TK board and fireproof magnesium cement board, the interlayer can be filled with porous sound-absorbing materials such as glass wool, rock wool and mineral wool, so as to improve the sound insulation effect of such board walls.
Absorbing material: www.goodsmaterial.com