| Metmann solutions against noise Noise is generally defined as a non-desired sound that affects health. It has been generally estimated as a source of nuisance and environmental stress. Noise absorption is fundamental in order to create a pleasant environment. The acoustic coatings mission is to avoid the reflection of the sound that comes in contact with them. All source of noise inside a premises produces more noise than in the exterior because the premises stops the sound exit and act as an amplifier. It is the case of offices, cinema auditoriums, restaurants, halls and schools that must have enough absorption in order to avoid noise problems. Phonoabsorbent coatings use allows obtaining an important reduction ofthe environmental noise because of the absorption of the reflected or |