All Products Waveform Spline W
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-optimised, 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 optimised 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.
Features
Benefits
