Different materials and uses for acoustic diffusion
The acoustic diffusion consists of the uniform dispersion in various directions of the noise produced in a room. Therefore, the main objective of the acoustic diffusers is to eliminate the reflection that occurs in a room without reducing the time of reverberation, dispersing acoustic waves both temporally and spatially. In other words, the sound will try to ensure that the sound reaches the spectators equally from anywhere, creating a surround sound that will increase the acoustic quality of the venue. The placement of diffusers will eliminate any problems with echo, sound focusing and displacement of the sound source. Sound diffusion is achieved through the design of acoustic panels, through a series of irregularities and reliefs on their surface. In general, the most used material for the manufacture of this type of panel is wood due to its spectacular acoustic performance. However, the frequency band on which the acoustic diffuser will act is determined by the dimensions of the diffuser.
Types of acoustic diffusersThere is a wide variety of types of acoustic diffusers, with certain characteristics that allow quality acoustic conditioning to be achieved in the room in which they are located. The most representative types are the following:
- Polycylindrical acoustic diffuser. These are panels with smooth convex surfaces that are arranged sequentially. Its radius of curvature is less than 5m.
- Scheroeder or RPG diffuser. Its objective is to achieve a certain frequency margin. Within them, we can find different RPG diffusers:
- MLS acoustic diffuser. Its composition is a smooth reflective surface to which a series of grooves of the same depth are incorporated. Depending on the frequency to be absorbed, they are designed with a specific size and distribution of perforations, although they are mainly used to absorb noise at low frequencies.
- One-dimensional QRD acoustic diffuser. Panels with a series of lateral rectangular slots, of equal width but different depth, separated by thin and rigid dividers. At ideatec, we have methacrylate acoustic diffusers Ideawave D-Wave and wooden QRD diffusers Ideawave D-Wood.
- Bidimensional QRD acoustic diffusers. They are oriented to obtain a diffusion of sound in all directions of the appropriate room. Its design is based on the arrangement of wells arranged in parallel of variable depth and usually square in shape. At ideatec we offer you Ideawave Incube, suitable for quality acoustic diffusion in walls and ceilings. li>
- PRD diffuser. These are primitive root diffusers that resemble QRD diffusers but with the difference that the depth of each slot is obtained from a different sequence. At ideatec we have Ideawave Cube, ideal for cladding walls and creating false ceilings.< /li>