Material: Polyester fiber

Rich and diverse usage scenarios depend on your imagination!

1. Sound absorption in entertainment facilities: karaoke, dance class, recording studio, recording studio, theater.
2. Sound absorption in the engine room: sound absorption and heat insulation of equipment such as engine room and aircraft cabin, sound absorption of pumps and large equipment, and temperature maintenance of refrigerators.
3. Sound insulation: It can be used in combination with sound insulation equipment such as sound insulation room, sound insulation door, sound insulation cover, etc.
4. Sound insulation of home office: used for sound insulation, sound absorption and heat insulation of walls, ceilings, floors, obstacles, meeting rooms, etc.
5. Safe baby service: It is installed near the wall and large furniture, can absorb the loud sounds like the cry of a child, and protect them from harm.
6. Shockproof: high-density materials with excellent shockproof performance can protect precision machinery and the product will not be damaged during transportation.

WHAT IS "SOUND ABSORPTION"?

• "Sound absorption" refers to a method of absorbing sound to prevent sound reflection, preventing sound from being transmitted to the outside of the room, and suppressing sound reverberation in the room where the sound is emitted. Glass wool, rock wool, polyurethane foam, etc. are usually used as sound-absorbing materials.

WHAT IS "SOUND INSULATION"?

• "Sound insulation" is one of the methods of sound insulation, specifically, a term that refers to a method of blocking sound propagating in the air so that the sound is not transmitted to the outside. Iron plates, concrete and relatively inexpensive plaster are typical materials commonly used for sound insulation.

Sound absorption and sound insulation

As you can see from the picture, sound insulation products can be divided into sound absorption and sound insulation. This sound-absorbing material suppresses reverberation, improves sound clarity, and prevents sound leakage to the outside. On the other hand, unlike sound insulation, sound absorption is a method of suppressing the reverberation of sound in the room where the sound is emitted.

Sound absorption principle

The sound enters the porous sound-absorbing material, and the sound is diffused in a large amount, so that the air vibration is directly transmitted to the air in the inner bubble part. At that time, viscous friction of air occurs on the surface of the bubble, part of the sound energy is converted into heat energy, and the reflected sound is reduced, which is sound absorption. Generally, in order to reduce the reflected sound to zero, it is necessary to select a sound-absorbing material whose thickness is more than 1/4 of the wavelength. In this way, the resistance to air movement attenuates the vibration, and the sound-absorbing material serves the purpose of reducing sound.

What is the sound absorption coefficient?

When sound waves enter the sound-absorbing material, they will be reflected, transmitted and absorbed. The sound absorption coefficient, which represents the performance of a sound-absorbing material, is the ratio of the energy of the unreflected sound to the energy of the incident sound.