Orac Decor products, although designed primarily for aesthetic and decorative applications, may have a limited effect on the acoustic properties of a space depending on their material, shape, and installation. However, their direct impact on acoustic impedance remains secondary compared to materials specifically designed for acoustics. Here is an analysis:

Definition of positive acoustic impedance

Acoustic impedance is a measure of the resistance that a surface or material offers to the passage of sound waves. A "positive acoustic impedance" means that the material contributes favorably to modifying or improving the behavior of sound waves (for example, by reducing reverberations or attenuating noise).

Acoustic effect of Orac Decor products

1. Materials used:

   • Purotouch® (high density polyurethane) and Duropolymer® (high density polymer) have low to moderate absorption properties.
   • Their density and composition allow for some slight attenuation of high frequencies, but they are not specifically optimized to absorb or diffuse sound waves efficiently.

2. Shapes and designs:

   • Cornices , 3D wall panels , and other moldings can contribute to the diffusion of sound waves, reducing echoes and improving acoustics in certain conditions. It depends on their shape (reliefs, patterns) and their arrangement in the room.
   • Raised surfaces, such as 3D wall panels, can slightly scatter sound waves, limiting the concentration of echoes in one direction.

3. Application :

   • When used with other acoustic materials (e.g., absorbent foam behind panels or in spaces with sound treatment), they can contribute to an overall improvement in acoustics.

Boundaries

• Orac products are not designed to provide significant sound absorption, like specialist acoustic panels.
• They are not suitable for environments requiring strict acoustic control, such as recording studios or auditoriums.

Supplement for acoustic treatment

If you want to optimize the acoustic performance of a room:

1. Combine Orac products with absorbent materials such as foam, mineral wool or textile acoustic panels.
2. Use Orac 3D wall panels to improve sound diffusion and reduce reverberations in residential or commercial spaces.
3. Integrate specific solutions for the floor and ceiling (carpets, acoustic tiles, etc.) as a complement.

In conclusion, although Orac Decor products can have a moderate positive effect on the diffusion of sound waves due to their design, they are not specifically optimized to provide significant positive acoustic impedance. For effective acoustic treatment, it is recommended to combine them with specialized materials.