Product Review -
Sensora Spatial Sound, Color and Vibration Therapy - May, 1997
By John Sunier
Click to see larger photo |
The first U.S. installation of a new
cutting-edge technology employing home theater equipment, a
modified satellite dish, a computer, a custom reclining chair and
special sound, light and vibration programming is now in
operation in that center of mellowness, Marin County, California.
The Sensora applies art, science and therapeutic principles to
overall relaxation and stress reduction.
A project of Sensortech in Montreal (where the original
installation is located), the Sensora is installed in a darkened
room of at least 100 square feet size with all surfaces covered
in black carpeting. An 11-foot parabolic screen is the largest
component. It is constructed from a satellite dish coated on the
inside surface with many layers of quartz crystals and reflective
silver particles. It is mounted at a proper distance to cover
nearly the entire field of view of the person in the reclining
chair below it. The screen is angled down toward the special
Sensora VIA transducer reclining chair which contains eight
built-in sound transducers. The chair is motor-driven to gently
shift from an upright position all the way to a nearly horizontal
reclining position, and is ergonomically designed for maximum
comfort of the user. Each of the eight sound transducers embedded
within the chair vibrate a section of the chair's surface under
one's body. They contact the shoulders, the lower back, the
thighs and the feet.
A four-channel home theater system plays from an eight-channel
professional cassette deck which allows the other four channels
to encode and store the digital programming for the light and
vibration portion of the Sensora experience. Cambridge SoundWorks
loudspeakers, including powered subwoofers, are used throughout -
under the screen and on the sides of the room. Behind the
transducer chair and above the head of the user is the LPA-1
Light Projection Array - a standing unit incorporating 15
independent electronically-controlled light sources merged into
five tri-color light beams via fiber optics technology [click here for photo]. Using special dichroic filters, it is capable of
projecting a seamless wall of pure colors on the screen.
The entire Sensora room is controlled by the SC-1 Sensor Driver
mounted in an adjoining area. This is the nerve center of the
operation - a computer coordinating all the elements through
multiple data ports [click here to see photo].
It synthesizes the light patterns on the screen that are an
essential part of the experience, controlling over 60 different
parameters of the projections. It also operates in conjunction
with the TD-1 Transdriver, which is hooked to the reclining
chair. Together they generate gentle waves of low frequency sound
vibrations that flow across the body from head to toe, creating a
sort of "sound massage." The chair idea is somewhat
similar to the home theater subwoofer chair and hassock which
Pioneer and others have demonstrated, but carried out with a
great deal more sophistication and complexity. Its purpose is not
to shake you up when you're supposed to be flying in the
Millenium Falcon, but to bring about a deeper level of
relaxation.
The TD-1 receives a signal from the tape and filters out the
higher frequencies. It then compresses the low end information
and limits it so that the level is optimal for playback in the
transducer chair. The unit then distributes this signal over the
eight outputs in the chair, smoothly varying their respective
levels in a coordinated manner. A special amplitude modulation
algorithm program is used by the built-in microcomputer. Eight
separate power amplifiers drive the chair transducers. Thirty
pre-programmed vibration patterns are in the memory bank of the
computer and twenty more can be customized. An infrared remote
controller allows all playback operations to be performed while
lying in the chair if one wishes.
So what is a half-hour Sensora experience really like? My first
thought upon entering the darkened room was that this experience
would probably not be a pleasant one for anyone suffering from
claustrophobia. After getting into the chair, the motorized
recliner tilted back and I thought of my last dental visit. But
as the sounds and colored lights slowly begin to come up I began
to slow down and breathe more deeply. There are many different
audio programs from which to choose, for different purposes such
as energizing, relaxing or balancing oneself. A variety of
environmental sounds were part of the tape I chose, mixed with
flowing New Age music.
The colors and patterns of the lights on the screen pulsated,
changed and moved in sync with the rhythms of the surround sound
music and nature sounds. Then the chair transducers began their
gentle kinesthetic sensation on my body. The whole thing is a
sort of bath in light, sound and physical sensations. The
programs are synchronized with the flow of brainwaves, breath and
heartbeat. The usual half hour session is over far too soon, but
I felt refreshed, as after a genuine massage or perhaps a period
of meditation.
A team of psychologists, psychotherapists, physicists and artists
developed the various Sensora programs. The composers of the
music are specialists in the field of relaxation music, often
combined with natural sounds recorded around the world. The
originator of Sensora is a Canadian physicist, Alain Martel,
whose equipment for sound spatialization is used by NASA, Disney
World, and Imax among others. His technology is used in bringing
movement and direction to the Sensora soundscape. The work is
based on research showing that the brain tends to spontaneously
harmonize with different pulsed frequencies of sound or light.
For example, stimulation of the senses with pulses in the Alpha
brainwave range (one of the four brainwave types) will help the
brain to move toward the relaxed state normally associated with
the Alpha waves.
The Sensora employs the known power of beautiful sounds and music
on the human body, mind and spirit. It maximizes the potential of
these benefits to create a unique sensation of a sound-space
completely surrounding and filling the listener. One customer
described it as a voyage inside a rainbow. Spas, chiropractic
clinics and the Wellness community are the major targets for
purchasing the Sensora installation and using it as a tool for
stress reduction and relaxation as well as in combination with
different forms of psychotherapy, hypnotherapy, massage and
bodywork. However, if you're looking for the ultimate Home
Theater for the mind and body, you can have your own private
Sensora in your home for $35,000 plus $2,500 installation fee.
For more information: Paul Devlas, Pres., Rainbow Vision, 1368
Lincoln Avenue, Suite 108, San Rafael, CA 94901. 415-457-9275.
John Sunier
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Secrets of Home Theater & High Fidelity
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