Audiobeam, Conference and information systems | audiobeam – Sennheiser 9859 User Manual
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AudioBeam
The AudioBeam directional loudspeaker works with ultra-sound, modulating the
audible sound onto an ultrasonic carrier frequency, much like a radio station does,
and then emitting this signal via 150 special piezoelectric pressure transducers.
Audible sound is only generated at a distance from the AudioBeam, when the signal
is demodulated because of the non-linearity of air. This can be imagined like the
creation of many small, virtual loudspeakers in the ultrasonic zone.
No sound is audible beside or behind an AudioBeam – you will only hear the audio
information if you are directly within the sound beam, or if the sound is refl ected
by a smooth surface. This makes AudioBeam an ideal tool for information terminals,
exhibitions, or even conferences where various AudioBeams emit several languages
to a defi ned part of the auditorium.
As the effects of ultrasound on the human body have not yet been thoroughly
investigated, AudioBeam is fi tted with a sensor that switches the loudspeaker off
when it registers movement within four metres.
AudioBeam is suited to a wide variety of applications:
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For theme parks and exhibitions
AudioBeam is an ideal tool for theme parks where it creates amazing effects
with moving sound when combined with a small stepper motor. In an exhibition,
AudioBeam will give explanations on an exhibit, which are only audible within a
defi ned area. When mounted opposite an exhibit, the work of art will seem to
”talk“ to the visitors, as the ultrasonic beam is refl ected by smooth surfaces.
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For the PC
PC users can forget all about headphones. AudioBeam is their personal
loudspeaker – without disturbing others in the offi ce.
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Automatic machines with voice function
A very discreet way of addressing customers: the sound will only reach the person
directly in front of the machine.
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In safety areas
AudioBeam can be used to directly address an individual person within a safety
area – putting them in an audio spotlight.
AudioBeam
Conference and Information Systems |
AudioBeam