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Diffusion arrays
are used on the walls and ceilings in auditoriums to blend the direct and early
reflected sound, increasing speech intelligibility and enhancing
musical clarity and intimacy. Traditionally, non-optimized, periodic
flat panels or arcs have been used and their placement has been
either aesthetic or based on geometrical optics. If not properly
designed and arrayed, objects can provide uneven coverage,
typically exemplified in minima and maxima in the sound pressure
level. In addition, these simple shapes can be diaphragmatic, leading
to a loss in low frequency sound. To solve this problem, RPG developed
the Waveform™ Spline - a curve optimized one dimensional surface
that provides uniform coverage in the area of use.
Problem
Flat panel arrays on walls and ceilings provide uneven sound pressure levels.
Coverage can be improved by curving or shaping the panels, but there
is no guarantee that optimum results will be obtained and consequently
uneven response is often experienced.
Solution
To solve this problem, RPG developed the first Shape Optimization™
program, which automatically determines the best shape and
array of curve optimized surfaces to insure uniform coverage. The Shape Optimizer™ combines
the power of the boundary element and multi-dimensional optimization
techniques, incorporating the diffusion coefficient as the metric
of optimal performance. The Waveform™ Spline provides optimal ensemble
for musicians on stage and uniform coverage in the audience.
Diffusion
The random incidence acoustical data illustrates how the Waveform™ Spline W provides useful sound diffusion
in the lower midrange through the higher 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
A metal thimble is provided to capture a wire cable through the holes provided in the ribs at the rear of the panel.
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Home:
Products:
Waveform™ Spline W;
The
First Curve Optimized One Dimensional Spline Sound Diffuser From
The Acoustical Industry’s Leading Innovator
| Features
& Benefits |
Features
One Dimensional Curve Optimized
shape
Ability to optimize
array and positioning
Integrated
mounting hardware
Seamless
tiling in both directions
Meets Class A fire safety codes
Field
finished
Benefits
Curve optimized
shape insures uniform coverage
RPG provides
optimal arraying and tilting to insure uniform coverage and
eliminate guess work in the field
Adjacent
panels can seamlessly tile for wide area coverage simulating a
single canopy element
Spline
panels and be used independently or tile side to side and
front to back for wide area application
Can be used in all applications
requiring a Class A fire rated material
Installation
is quick and easy.
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Copyright
2000, RPG Diffusor Systems, Inc.