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| The main characteristics
and specifications of VoiceUbique are as follows: |
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So lightweight as to be almost
imperceptible to the wearer |
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No encumbering wires |
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No leakage of audio information to the surrounding
environment |
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No need for operations, such
as initial settings or power-on/off |
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Audio content can be automatically switched
through a system that recognizes the user with RF tags (optional)
RF tag: a passive radio frequency ID tag. |
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Ability to restrict communication
range: Increasing the focus of the infrared rays allows spot
communication with a specific person. |
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Ability to expand communication range: Diffusing
the infrared rays more widely allows simultaneous communication
with multiple persons. |
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| Use of infrared rays:
VoiceUbique can be used in places where the use of radio
waves is restricted, such as hospitals and onboard aircraft. |
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Maximum duration of continuous
use: 55 hours |
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Maximum standby duration: 400 days
Note: These figures assume the use of a 55-mAh compact coin
battery. |
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Being noise-free due to digital
communication, audio sound can be heard clearly. |
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Broadband sound quality good enough for appreciation
of music (equivalent to the quality of FM) |
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VoiceUbique can be structured to produce
stereo sound (under development). |
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Conforming to the
"Eye Safety Class 1* (8-hour safety standard), VoiceUbique
is safe for eyes.
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* Eye safety standard
for laser products (JIS-C-6802, IEC-60825). |
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Many
transmitter and receiver pairs can be used simultaneously within
a small space, such as a train or a classroom. |
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VoiceUbique
does not affect, or is not affected by, other devices using
2.4GHz ISM (Industry Service Medical) band, such as wireless
LANs (IEEE802.11g/h), radio frequency tag readers, and microwave
ovens. |
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VoiceUbique
can be used in places where use of radio waves is restricted,
such as hospitals and onboard aircraft. |
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The
power consumption of VoiceUbique is only a fraction of that
of a headphone using Bluetooth(TM) while in operation, and several
hundred times less while in standby mode. |
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Note: NTT's estimates assume the use of a
compact 55-mAh coin battery. |
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The
communication range (direction and distance) can be changed
by adjusting the number and direction of transmitters. |
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Sound can
be prevented from reaching a certain spot by using shielding
boards. High security is assured because it is not possible
to eavesdrop sound anywhere not visible from the location of
VoiceUbique. |
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Since sound
is broadcast, multiple receivers inside the area covered by
the infrared beam of VoiceUbique can share music and other audio
information. |
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Since
only a small number of components are required in the receiver,
there is great freedom in designing the shape of the receiver,
such as a small lightweight ring or an earphone. |
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Since no transmission delay occurs, lip movements can be accurately
synchronized with speech.
* Bluetooth(TM)
is a registered trademark of the Bluetooth SG Inc. |
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