Overview of Bosch Integrus infrared
language distribution system
For international conferences with multiple languages, it
is obviously of the utmost importance that all participants
can understand what is being said. That is why a system, which
enables interpreters to simultaneously interpret the speaker's
language, is almost indispensable. The interpretations created
are then distributed throughout the conference venue, so delegates
can select their language of choice and listen to it through
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The most effective method of distributing the interpretations
is by using a Bosch
Integrus infrared language distribution system.
Infrared means wireless, so delegates have total freedom
of movement. It means information integrity, because distributed
signals cannot pass beyond the conference hall. And now,
with the Bosch Integrus system, it means better than ever
audio quality, with no interference from hall lighting,
In simple terms, an infrared distribution system consists
of a transmitter, one or more radiators and a number of receivers.
Various accessories are also available, such as headphones
cables and battery charges - for a more detailed explanation
of Integrus hardware please see our Bosch
is the central element of the Integrus system. It accepts
inputs from either analog or digital sources, modulates these
signals on to carrier waves, and then transmits the waves
to infrared radiators
located elsewhere in the room. The transmitter accommodates
special interface modules to ensure compatibility with these
external signal sources. Depending on the transmitter model,
up to 32 separate channels can be transmitted simultaneously.
The output of the infrared radiators is intensity-modulated
infrared radiation. Each delegate is supplied with a pocket
which has a lens to collect the infrared signal and direct
it to the sensor. These signals are then decoded back into
interpretation languages, which are chosen by delegates using
a channel selector and passed to the delegate's headphones.
integrus - Brochure
integrus - Databook
integrus - A&E spec
The Integrus language distribution system incorporates unique,
specially developed Bosch ir-Digital technology that is characterised
by a number of features.
- The Integrus conforms to IEC 61603, part 7. This is the
.. for digital infrared transmission
for language distribution.
- The use of the 2-8 MHz frequency band eliminates disturbance
.. types of lighting systems.
- Error correction by means of a Reed Solomon coder, plus
the bit error
.. rate threshold, ensures a
high audio quality
- The digital transmission protocol used allows additional
.. be sent (e.g. synchronization
of the number of channels in use)
- The application of digital technology results in a very
high sound quality
.. with a signal/noise ratio
of Infrared distribution
Infrared radiation is an ideal medium for audio distribution.
It is invisible to the human eye and can carry multiple channels,
each with a separate language, over relatively large distances.
And, above all it is a wireless distribution system, so conference
participants can receive interpretations without being physically
connected to the system.
of movement for delegates
With an Bosch Integrus nfrared system, delegates have great
freedom in movement throughout the conference room. As the
interpretations are transmitted through the air, there is
no physical connection to the system, so the only limitations
are the walls of the venue itself. The receivers used by delegates
to pick up the signal are lightweight, portable and unobtrusive
and can be easily slipped into a shirt or jacket pocket.
Conferences can often include discussion of sensitive information,
where it is important that any audio distribution does not
compromise security. As infrared radiation is unable to pass
through opaque structures such as walls, the congress venue
itself acts as a barrier to infrared radiation escaping and
distribution in adjacent halls.
Infrared systems are ideally suited for conference centres
with a number of halls, since walls are opaque to infrared
radiation, there is no interference between separate conferences.
interference from lighting systems
One of the limitations of traditional infrared language distribution
systems was interference from lighting. The problem was particularly
acute with newer (florescent) lighting systems, which operate
at higher frequencies and therefore cause more interference.
The Integrus system has completely solved this problem by
using a much higher frequency band - 2 to 8 MHz - for audio
Freedom from interference for all types of venue lighting
brings two major advantages: audio quality is greatly improved
and systems can be used much more easily on a rental basis,
because they are compatible with all types of venue lighting.
The Integrus system offers greatly improved audio quality.
Better compression techniques and a higher signal-to-noise
ratio means that the received signal is much clearer. Greater
intelligibility makes the system less tiring to use over extended
periods. Delegates can therefore maintain their concentration
levels more easily during a long conference session.
more detailed product information
Please browse our Bosch
Integrus Infrared pages.