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| Applications
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Worship Spaces, Band Rooms, Choral Rooms, Auditoriums, Classrooms, Distance Learning
Centers, Conference rooms, Recording and Broadcast Studios, A/V rooms, Cinemas
and Home Theaters. |
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Application of T-bar mounted absorptive and reflective ceiling systems have been a traditional approach to acoustical control. However, sound can also be controlled using diffusion.
RPG pioneered the sound diffusion market over 25 years ago, with a range of number theoretic diffusing products. The tradition continues with the
introduction of a new entry into the T-bar mounted acoustical ceiling market, the Waveform Harmonix™ G. RPG® utilized its patented Shape Optimizer™ and
aperiodic modulation technology to provide an interesting and modern contoured surface that has the appearance of a bas relief sculpture. The center of
each panel is asymmetric, however, the sides are identical. Therefore, this unique acoustically optimized asymmetric shape, offers the opportunity to
create an unlimited range of surfaces, determined only by the orientation of adjacent panels. The Harmonix™ G is fabricated from non-combustible glass
reinforced gypsum for safety and economy and designed to provide optimal coverage with minimal low frequency diaphragmatic absorption. This provides
uniform coverage, due to optimal diffusion, lack of periodicity effects, due to aperiodic modulation and good low frequency support. Add beauty and
improved acoustical performance to your room with Harmonix™ G.
Problem
An “acoustic ceiling” has come to mean absorptive mineral or fiberglass tiles. Exclusive use of only mid-high frequency absorption in the ceiling cannot
optimize the acoustics of spaces where music is to be enjoyed or speech is to be understood. The industry needed a complementary sound diffusing tile for
these applications.
Solution
The Waveform Harmonix™ G is the first cost-effective, non-combustible FRG, molded 2D sound diffusor that offers uniform mid-high sound diffusion and
minimal low frequency diaphragmatic absorption to provide optimal coverage with good bass support.
 Absorption
In a drop ceiling application, there will be some absorption caused by leaks between the grid and tile as well as tile surface resonance. This is kept to a minimal amount with an FRG unit due to mass and surface rigidity.
A comparison of several RPG diffusive ceiling tiles is included here based on the E-Mount Random Incidence Reverberation Chamber test method.
Diffusion
The random incidence acoustical data illustrates how the Harmonix™ G provides useful sound diffusion
in the mid and high frequency range. The chart displays the mean diffusion coefficient,
which is the normalized standard deviation of the 1/3 octave polar responses
for angles of incidence between 0° and 90°, the normalized scattering coefficient
for computer modeling calculations and the A-mount absorption coefficient for reference.
Installation
When ceiling suspended in a 15/16" T-bar grid, the
Harmonix™ G protrudes 3 1/4" into the room. Wall mounting the
Harmonix™ G requires custom wooden stiles and rails
to capture the perimeter flange.
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Home:
Products:
Harmonix™ G;
The
First Molded FRG Two Dimensional Bicubic Sound Diffuser From
The Acoustical Industry’s Leading Innovator
| Features
& Benefits |
Features
2D curve optimized reflection phase grating
Uniform hemispherical scattering design for all angles of incidence
Offers diffusion with minimal mid band absorption
2D curve optimized surface provides twice the diffusive specular attenuation
of a 1D
Cost effective, modular 2x2 molded FRG panel
Can be modified to incorporate down lighting
Benefits
The 2D curve optimized RPG provides phase variation in two orthogonal
directions for uniform omnidirectional scattering
Hemispherical scattering is ideal for ceiling applications because
the incident sound is uniformly distributed throughout the room
from a planar ceiling surface
The omnidirectional diffusive attenuation, coupled with minimal
mid band absorption, provides ideal reflection control without
deadening the space
2D diffusive attenuation provides effective diffusive control
of strong specular reflections
FRG is non-combustible and can be used in any space to meet
life safety fire codes
Low cost allows designers to cover large surface areas for optimum
performance
Modular 2' x 2' panels can be wall mounted or suspended in a
15/16'' T-bar ceiling grid
A central penetration (9 3/8" x 9 3/8") can be incorporated
to accommodate down lighting, sprinklers, projector
supports, and other design elements |
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Copyright
2000, RPG Diffusor Systems, Inc.