DeAmp is developing and marketing acoustical ceilings and walls, utilizing a revolutionary technology; laser cut acoustic micro slots. Sound absorption by micro slotting makes it possible to exploit new indoor areas with smooth surfaces and excellent finish. The technology also eliminates use of mineral fibers, traditionally used in acoustic absorbers. This makes it possible to do transparent sound absorbers as there is now no soft material to cover and hide.
Unique Patented Technology
DeAmp’s technology is developed during 10 years of research at SINTEF and The Norwegian University of Science and Technology. The technology is based on the well-known acoustic principle Helmholtz resonator. DeAmp’s unique technology utilizes laser cut micro slits to perforate the surface. When sound waves, defined as compressed air, hit the perforated surface an overpressure arises on the front of the panel. To equalize the pressure, the compressed air is forced through the micro slits, and viscous forces between the very narrow slit and the air causes friction. Hence the sound waves are absorbed and transformed into heat without use of any porous fiber-materials. The technology is internationally patented by DeAmp.
Excellent Esthetical Properties
Our sound absorbers offer excellent esthetical properties treasured by architects. We offer clean and smooth surfaces and a wide variety of colors and surface finishes. DeAmp’s absorbers can be anodized, painted, engraved or printed on, and because they are fiber free they can be transparent, translucent or colored. Panels can be mounted in traditional ceiling suspensions, directly on walls, as panel elements in office furniture systems or stand alone partition walls.
The Safe and Healthy Alternative
Fiber free sound absorbers ensure a better indoor environment, especially for children and people with respiratory disorders. The products do not emit fiber particles, nor do they collect dust in the slits. They do not absorb moisture, which can lead to fungi and rot, and they are easy to clean with water based products. These benefits reduce costs related to sick leave, loss of productivity and maintenance of facilities.
Dust from porous materials can be inflammable and create life-threatening hazards because of limited visibility and breathing difficulties in a fire emergency. DeAmp metal absorbers are made from 100% solid aluminum or steel without the use of porous layers or fiber membranes.
High Light Reflection
The laser cut micro perforated slits are less than 0.2mm wide and therefore barely visible at a normal distance from the ceiling. They cover less than 1% of the panel surface and consequently over 99% of the material is left as a reflecting area. By utilization of the reflecting or transparent surfaces, DeAmp panels can lead the light into the room, something which has been difficult with traditional sound absorbers. Exploitation of daylight reduces lighting costs, and improves the users’ well-being.
Traditional suspended fiber based ceiling systems, in combination with active cooling in a concrete ceiling, will reduce the performance of the cooling system. The fibers will work as an insulating layer, and hence increase the energy consumption of the cooling system. Scientific reports on the energy efficiency of DeAmp products, states that this increase can be reduced with 50% by using DeAmp’s aluminum absorbers compared to traditional fiber absorbers. The effect will also be considerable when utilizing the thermal inertia of the building materials to keep the temperature at a comfortable and more stable level during the shifting day and night conditions.
Compared to the best porous absorbers, micro perforated products perform somewhat poorer in higher frequencies. However, higher frequencies are more easily absorbed by furniture, people and surface elements in the room. Therefore excellent acoustic conditions can still be achieved based on the high absorption at low and middle frequencies. Scientific measurements from our reference projects show that values are below the required reverberation time for the whole frequency band.