RPG effusor Newsletter - December 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.

We wish all of you a wonderful and safe holiday season and a happy and successful New Year. We would like to thank all of you for supporting RPG and it only strengthens our resolve to continue to expand the acoustical palette through a commitment to fundamental acoustic research. We are proud to be the acoustic industry's leading innovator for 26 years, which could not happen without your continued support.

Learn how to isolate a sport or fitness floor
If you have to isolate the noise of a sports or fitness facility located above a commercial business, then you will be interested to read a new white paper completed by RPG and CDM. The study determines the frequency range of the interfering airborne noise, using both an accelerometer and sonometer. A design suggestion is presented using a vented version of the DPM roll out isolation floor, which consists of recycled polyester instead of traditional fiberglass and embedded low resonant frequency elastomer pads, to lower the combined system resonance to roughly 15 Hz.

RPG BAD Woodgrain Featured at the Newseum
The Newseum is a 250,000 square foot museum that focuses on news, its history and its modern technology. The museum features 7 floors of galleries, theaters, exhibits and retail spaces. The RPG BAD Expo panel in American Cherry finish is utilized in several of the smaller theaters as well as a large gallery space. The panels are utilized in rear wall areas of several small theaters that have open walls and are directly adjacent to one another. The panels help to reduce sound levels between theaters while creating an ideal listening environment with diffuse reflections within each theater. The panels are also utilized in the 9/11 Theater as well as the Big Screen Theater that features a 100-foot-long video wall that presents historic news broadcasts and original documentaries. The architect for this project was Polshek Partnership Architects, New York, NY and the acoustician was SH Acoustics, Milford, CT. For more information, please download the Binary Amplitude Diffsorber brochure.

Swarthmore College
RPG has materials in two of the residence halls located at Swarthmore College in Swarthmore, PA. The main lobby entrance areas for both halls utilize Topakustik panels for their ceiling surfaces. This helps to reduce overall sound level in these areas and provides a warm wood aesthetic. The panels are suspended via the TopAkustik Z-grid System with grooves held back from the perimeters. The finish is a custom stain on American Maple. Both ceiling areas also incorporate linear diffusers and lighting. The acoustician on this project was Acentech, Cambridge, MA and the architect was William Rawn Associates, Boston, MA.

Educational Opportunities from RPG
RPG will be increasing its edcuational offerings in the New Year for both architects and acousticians. The AIA/CES accredited presentation has been updated with emphasis on product applications, finishes and installation. The Acoustical Continuing Education (ACE) program has also been updated with follow up Workshops available in the field or via GoToMeeting. These GoToMeetings will be offered weekly and acousticians can choose from a published list of topics including Products Descriptions, Applications and Research. Special GoToMeeting requests are also available on a topic of the specifier's choosing. We look forward to this expanded collaboration and invite you to take advantage of it.

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Other Important Items to Note
Product Finder
Keep abreast of the latest products in progressive architectural acoustics design.



Project Gallery
We invite you to view our project gallery to see how RPG products can be used in your next design. Take a Look


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.

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.

RPG Rapid Prototyping
RPG offers Rapid Prototyping Service.

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.


Copyright 2009, 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