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When a sound wave emitted in an enclosed environment meets a wall, a part of its energy passes through it, a part is absorbed by it and a part is reflected in the environment. If the amount of reflecting surface of an environment is high, it will be so reverberating that it becomes annoying to listen to any sound. Even if there is little furniture in a room, the reverberation effect is very strong. You can notice it in hotel corridors or waiting rooms.
In crowded places such as restaurants, pubs and schools, people talking to each other are forced to rise their voice volume to overcome the background noise. In technical environments it is necessary that the acoustic quality is above average, for example in meeting rooms, conference rooms, congress centres, theaters etc.. It often happens that people invest in a building structure, but the investment is ruined by the poor acoustic design of the whole building or the single room.

Acoustic insulation or acoustic impedance

We talk about acoustic insulation or acoustic impedance when there is the need to “prevent” the sound transmission from the environment where it is emitted to outside. Example:

– In a meeting room of a office, listening from outside should be prevented, despite the closed doors, acoustically sealing both walls and ceilings or false ceilings.

– Adjacent residential units should be built in such a way so as not to disturb neighbours or not to be disturbed by external sound sources or neighbouring places.

In case of acoustic insulation between two environments, it is necessary to include the soundproof materials within the structure. In addition, it is possible to achieve a better result by building double walls, properly spaced. The two surfaces should not be rigidly connected and the cavity should contain sound absorbing material.

What if the structure already exists?
Seipo can meet these needs. The effectiveness of an acoustic treatment depends mainly on the type of material used, the quantity and the proper positioning. An intervention is necessary to correct the acoustic insulation, to prevent the transmission of sound waves by covering internal surfaces of the environment with sound-absorbing materials. They need to have not only acoustic characteristics but also aesthetic ones, because they must adapt to architecture and furnitures.

For “common” environments such as restaurants, school environments, waiting rooms, but also anywhere the needs of acoustic quality are higher, flat and curved sound-absorbing panels between 20 and 100 mm can be installed. They are made with non-toxic materials safe in all conditions, properly covered in relation to the environment.


Sound absorption or acoustic absorption

We talk about sound absorption or acoustic absorption when there is the need of a good sound comfort and, thus, a good acoustics.

– A meeting room that, even if isolated from the outside, has walls with particularly reflecting materials which allows sound waves to come back in the form of echo or reverberation.

– A conference room, a congress center needs acoustic corrections on the basis of a variety of factors such as environment volumetry, walls materials, presence of padded armchairs, etc.

Seipo can meet these needs
In order to avoid noises, reverberation time must be optimal to reduce the echo effect.
The degree of sound absorption of a product depends on several factors such as: components chemical nature, porosity, thickness, density, rigidity and shape.
In reverberating environments, sound-absorbing materials are installed on the walls or on the ceiling in the form of panels.
To reduce reverberation time, during intervention of acoustic correction, internal surfaces of the environment are covered with sound-absorbing materials. They need to have not only acoustic characteristics but also aesthetic ones, because they must adapt to architecture and furnitures.

SEIPO presents an innovative panel system, technical and aesthetic objects which allow to improve the noise situation of any environment both with acoustic impedance and absorption, while respecting the overall impact they may have on the general architectural environment.