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1. The Next Generation of Acoustic
Surfaces and Finishes
RPG Diff
Diffusor S t
Systems, Inc. - U
Inc. Upper M lb
I Marlboro, MD
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AIA/CES Provider J425
AIA/CES Program AF1011
“RPG Diffusor Systems, Inc. ” is a Registered Provider with The American Institute of Architects
Continuing Education Systems. Credit earned on completion of thi program will b reported t CES
C ti i Ed ti S t C dit d l ti f this ill be t d to
Records for AIA members. Certificates of Completion for non-AIA members are available on request.
non-
This program is registered with the AIA/CES for continuing professional education. As such, it does not
include content that may be deemed or construed to be an approval or endorsement by the AIA of any
y pp y y
material of construction or any method or manner of handling, using, distributing, or dealing in any material
or product. Questions related to specific materials, methods, and services will be addressed at the
conclusion of this presentation.
V092910

2. Learning Objectives for Today
Introduction To Sound Absorption,
Reflection and Diffusion
The Next Ge e a o o Absorptive Su aces
e e Generation of bso p e Surfaces
and Systems: Principle Attributes, System
Options, Mounting Methods and Application
Examples.
Examples
The Next Generation of Diffusive Surfaces
and Systems: Principle Attributes, System
Options, Mounting Methods and Application
Examples.
p

3. Reflection Energy Preserved
WALL / CEILING
Incident Sound Reflected Sound
Angle of Incidence = Angle of Reflection

4. Absorption Energy Reduced
WALL / CEILING
Sound Ab
S d Absorbing
bi
Device
Incident Sound Reflected Sound
Angle of Incidence = Angle of Reflection

5. Diffusion Energy Preserved
WALL / CEILING
Sound Diffusing
S d Diff i
Device
Diffused Sound
Diffused Sound
Diffused Sound
Diffused Sound
Incident Sound

6. Methods for Diffusing Sound
Classic Elements Geometrical Shapes
Number Theoretic Surfaces
Optimized Surfaces – State of the Art

7. REFLECTION
O
REVERBERATION
CHAMBER
COMMON AUDITORIUM
AREAS
CORE
LEARNING
REHEARSAL
DIFFUSION
ANECHOIC LISTENING DIFFUSION
CHAMBER CHAMBER
ABSORPTION DIFFUSION

8. Light Transmitting Foil Systems
Transparent,
Light Filtering,
Opaque Foils
Polycarbonate
100µ
100µ
Micro
Perforations,
0.3mm

9. Performance

10. Mounting – Pin / Spring / Grommet

11. Mounting – Hembar / AL Profile

12. Atrium

13. Atrium

14. Cafeteria

15. Cafeteria

16. Natatorium

17. Office – Radiant Ceilings

18. Light Transmitting Panel Systems
Transparent
PETg Panel,
2mm-
2mm-15mm
Laser Slot,
0.2mm

19. Light Transmitting Panel Systems
Transparent
PETg Panel,
2mm-
2mm-15mm
Bore, 0.5mm

20. Performance
NRC = 65
Performa
nce

21. Tensioned Cable Mounting

22. Mullion Mounting
1. 2.
3. 4.

23. Atrium

24. Conference Room

25. Hotel Lobby

26. Sound
Diffusing
Diff i
Systems

27. Shapes & Styles of Diffusers
Planar Surfaces - Amplitude Gratings
These 1D and 2D surfaces consist of patches of absorptive (drilled
areas) and reflective areas in an optimal binary sequence which
offers a combination of absorptive and diffusive properties.

28. Shapes & Styles of Diffusers
Rectilinear Surfaces
RPGs - these 1D and 2D surfaces can be either based on
mathematical number theory or boundary element
optimization and scatter high frequency sound uniformly.

29. Ceiling Tiles

30. Shapes & Styles of Diffusers
Curvilinear Surfaces - BEMs
These 1D and 2D surfaces are based on boundary
element optimization and scatter a broad range of
sound frequencies uniformly.
q y

31. Ceiling Tiles

32. FLAT SURFA
T ACE
Visualizing Diffusion
DIFFUS SURFA
SE ACE

33. Auditorium

34. Auditorium

35. Auditorium

36. Auditorium

37. Auditorium

38. Lecture Hall

39. Structural Systems
Light Weight
Weight,
Low Frequency Regional
Slots + Cavities Aggregate
• R i
Regionall
materials +
Horizontal production
+ Vertical • Recycled
Rebar content
• No VOCs
Broadband Sound Absorption Sound Diffusive
Due To Porosity of Aggragate
y gg g Surface Pattern
and Increased Surface Area

40. Performance
Absorption Coefficient Transmission Loss

41. Mounting

42. Integral Coloring
Matte Finish Matching Grout
Weathered Finish
*Colors Vary By Region
Design Series

43. Gymnasium

44. Auditorium

45. Auditorium

46. Auditorium

47. Exterior Noise Barrier

48. Thank You
Th k Y