Abffusor®

RPG Abffusor®

The RPG Abffusor® is the industry’s first absorption phase grating. It is an extension of RPG®’s research on the reflection phase grating (RPG) which provides sound diffusion from a series of divided reflective wells of equal width and different depths. The depths of both the reflective wells of the RPG and the absorptive wells of the Abffusor® are based on mathematical number theory sequences. The Abffusor®’s absorption efficiency extends below that of a traditional flat porous absorber because it utilizes two absorption mechanisms.
 

Problem

There is a need for a surface treatment that controls strong first order reflections over a wide  range of frequencies and angles of incidence which also offers near field scattering to provide a natural ambiance.

Solution
The Abffusor® accomplishes solves these problems by using two absorption mechanisms in addition to diffusion. Absorption extends to lower frequencies than flat porous absorbers due to the QRD® pressure gradient mechanism.

Near field QRD® diffusion provides additional sound control.
 

Features

• Similar appearance to a QRD® 734 Diffusor - Complimentary performance to a QRD® 734 Diffusor
• Frictional dissipation and pressure gradient absorption mechanisms
• Number theory surface topology - Modular and versatile - Attractive design element

Benefits

• Can be used in conjunction with the QRD® 734 Diffusor to provide an integrated visual design
• Broad bandwidth abffusive performance compliments the broad bandwidth diffusive performance of the QRD® 734 Diffusor
• Frictional dissipation and pressure gradient absorption mechanisms offer extended broad bandwidth random incidence absorption for uniform attenuation - Irregular number theory surface topology effectively absorbs and diffuses glancing incidence reflections more effectively than a flat porous absober providing natural sounding reflection control
• Modular construction makes wall, drop ceiling, or floor mounting simple and attractive
• Wide variety of custom fabric finishes makes the Abffusor® a decorative design element as well as a powerful acoustic tool

Applications
Recording studios, Post production studios, Listening rooms, Home theaters, Public spaces