RPG effusor Newsletter - March 2009

RPG Continually Evolving
The RPG monthly effusor Newsletter introduces new products and services and highlights recent projects. If you are receiving this Newsletter for the first time, here is a link to all previous issues online.

The Topakustik system is being specified in a growing number of prestigious and beautiful facilities, like the one shown, in which we illustrate the capability of using curved Topakustik with moisture resistant cores in a swimming pool. In past issues, we mentioned the new Topperfo Graphic and the new revolutionary Topperfo Micro with 30,000 holes/sf. For more information please visit the new Topakustik website.

New Topakustik Outside Corners
The Topakustik system is used to treat the entire room and therefore finish details like outside corners are important items. We are proud to announce several new outside corner options in metal and wood. For more information contact Sarah Brown, Director of Architectural Acoustic Sales, at sbrown@rpginc.com.

Introducing Topakustik Absorptive Cabinet Doors
When your project is lacking sufficient wall or ceiling area for Topakustik absorptive wood planks and panels, you may want to consider specifying Topakustik cabinet doors. These doors are typically designed to have the same appearance as the surrounding walls, thereby blending into the wall design. In this project we highlight custom curved doors. Custom sizes are available, as well as the hinge and handle hardware. For more information contact Sarah Brown, Director of Architectural Acoustic Sales, at sbrown@rpginc.com.

Introducing the RPG-CDM Noise and Vibration Isolation System
The CDM Box-in-Box isolation system offers the widest range of elastomers with the lowest resonant frequencies for efficient sound isolation. Elastomers include natural rubbers, synthetic Neoprene rubbers, virgin and recycled cork-rubber elastomers, polyurethane and other foams, recycled tires and a complete range of springs with resonant frequencies down to 2.5 Hz. The system included easy to use floor, wall and ceiling isolators to effectively isolate interfering air borne and vibrational interference. For more information about the complete floor, wall and ceiling isolation system, please contact Tom Ryan, Director of Noise and Vibration Sales, at tryan@rpginc.com.

Fiber-free, Light-transmitting, Microperforated and Microslit Absorbers
Microperforated, fiber-free, light-transmitting plastics offer a new solution for sound absorption with daylighting. Fiber-free absorption is critical in health care, hospitality, food service, hotels, restaurants and schools. In addition, they provide a needed solution in large glass-dominated enclosures, such as atria, lobbies, convention centers, botanical gardens, etc. The photo is a recent installation at the Franklin Institute in Philadelphia, PA. For more information contact Sarah Brown, Director of Architectural Acoustic Sales, at sbrown@rpginc.com.

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Other Important Items to Note
Research
Keep abreast of the latest topics and developments in progressive acoustics research.



CATT
We continue to offer assistance with the most comprehensive acoustic modeling and auralization package, CATT-Acoustic v8.x. and provide absorption and scattering modeling coefficients in CATT and EASE formats. New pricing effective 11/1/2007. Prediction and Auralization modules each $3,000. We can help facilitate the building and prediction of your models.

Shape Optimizer
Our optimization capabilities are continually expanding, Click here to learn about the latest product
and software developments.



New Solid Prototyping
RPG announces a new RPG Rapid Prototyping System brochure.

This allow us to fabricate and test scale models of new scattering surfaces that the acoustician or architect may envision using in a project. This is the future.

Education
Please join us for our Diffuse Seminars. Dates to be announced. You can view the Agenda pdfs on line. We also invite you to visit our Acoustics Library, Diffuse Reflections, Diffuse Bulletins and Competitive Evaluations.

Test Data
RPG is offering random and directional incidence diffusion, scattering and absorption coefficients for all of its products. Random and directional incidence diffusion coefficients and polar patterns (shown below) indicate the uniformity of diffusion and can be used in CSI specifications and as a metric to compare potential diffusing surfaces. The random incidence absorption coefficient can be used in CSI specifications as a metric of absorption efficiency. The directional and random incidence scattering coefficients can be used in computer modeling programs, but not as a metric of diffusion uniformity.

Copyright 2000, RPG Diffusor Systems, Inc.
651-C Commerce Drive, Upper Marlboro, MD, 20774, Phone: 301-249-0044, Fax: 301-249-3912, E-mail: info@rpginc.com