Room acoustics

Sound absorption

Optimised room acoustics are the key to clear sound and a pleasent listening experience - whether in the office, concert hall or living room. We can help you to optimise the acoustics of your rooms and to create an environment in which the quality of the sound can be experienced at the highest level.

durlum has modern, innovative solutions for areas with different room acoustic requirements and bases the implementation of these on standards such as DIN 18041. A versatile range of metal ceilings from rectangular metal panels to POLYLAM vertical baffles, raft ceilings and LOOP TYPE 3 can be designed as acoustic ceilings that absorb sound over a wide frequency range. Where special requirements apply to room acoustics our acoustically very effective dur-SOLO raft ceilings can prove to be an effective solution. With dur-SOLO ACTIVE, this is even possible with core-activated concrete ceilings without significantly impairing the heating or cooling performance of the concrete ceiling. 

For open ceilings such as open-cell ceilings, expanded metal ceilings RHOMBOS or LOOP type 2, we have the broadband absorber dur-SONIC CUBE in our program. The absorber can be easily mounted on the existing substructure in the background of the open ceiling. Depending on the covering density, absorption values up to alpha w 0.85 can be achieved.

Our low-frequency absorbers dur-SONIC QUAD (wall or ceiling mounted) and POLYLAM dur-SONIC (complementary to the POLYLAM vertical baffle) are particularly suitable for supporting existing absorption surfaces in the room in the range 125-500 Hz. This achieves balanced room acoustics that enable very good communication.

The room acoustics in rooms with metal acoustic ceilings depends primarily on the absorption material of the metal ceiling. Examples of absorbent materials include acoustic fleece, polyester mat, mineral wool or expanded foam. Also, the height of the ceiling void influences the absorption capability of acoustic ceilings. Commonly occurring perforation patterns play a subordinate role in the desired reverberation time.

With decades of experience and a large database of measurements, we can provide you with the most suitable, economically optimised acoustic ceiling for your project, taking into account all the acoustic parameters of the room.

Sound insulation

Unlike sound absorption, which is used to control sound within a room, sound insulation is used to prevent sound from travelling from one room to another. The degree of sound reduction depends on how little each component transmits sound. In particular, our C-channel metal ceilings can be used with heavy inserts to significantly increase longitudinal sound insulation, significantly reducing the noise transmitted to adjacent rooms through shared ceilings.