The
Triffusor® has its origins in an ancient theatrical device called
a periaktoi (Greek for ®revolving”) by which a scene or change
of scene was indicated. It was described by Vitruvius in his De.architectura
(c. 14 BC) as a revolving triangular prism made of wood, bearing on each
of its three sides a different pictured scene. While one scene was presented
to the audience, the other two could be changed. Although it was once
thought to be a feature of Greek classical drama, it is now believed that
it did not originate until the Hellenistic age.
The
periaktoi was revived, notably for the Italian theatre around 1500 and
for the 17th century English stage. We have reintroduced the concept of
periaktoi to the 20th century with an acoustical "twist". The Triffusor®
is a rotatable equilateral triangle prism with absorptive, reflective,
and diffusive sides.
Variable Acoustics
The Triffusor® was developed to make completely variable acoustics
a reality. Triffusor® modules can be arranged adjacent to one another
in a linear array so that they form a surface of any desired acoustical
character. These arrays combine the basic acoustical building blocks of
absorption, diffusion, and reflection.
With the Triffusor®, small rooms take on a flexibility not possible
before. You can easily adapt to the requirements of a particular situation
and not be locked into a fixed acoustical environment. Even large rooms
can be made more versatile by using movable Triffusor® partitions
or gobos to alter the localized acoustics. The Triffusor® can also
be flush mounted to form a variable acoustics wall.
The effect of almost any acoustical treatment on the binaural perception
and enjoyment of music can easily be demonstrated by applying Triffusors®
along the walls and corners of a room. One can experience the effect of
early reflections on stereo imaging and frequency coloration, the difference
between the sensation of high localization and high spaciousness in a
listening situation, the correlations between spaciousness and lateral
diffuse reflections, and the benefits of a diffused rear wall.
Installation
Triffusors® should be mounted on a platform with height adjustments
to compensate for floor irregularity. Rotation can be accomplished by
using a quarter inch dowel or "lazy susan" type bearing to connect the
center of the Triffusor® base and the mounting plinth.
Dowel holes and bearings should be positioned so that Triffusor®
modules meet at their edges when in position. Mounting hardware is not
supplied. Triffusors® can also be stacked atop one another when taller
columns are needed.
When your design calls for variable acoustics or acoustical scene changes, specify the Triffusor®.
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Diffusion
Absorption
Reflection
Combination
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Copyright
2000, RPG Diffusor Systems, Inc. |