Bosch INTEGRUS Specifications download pdf (Page 6)

Bosch Security Systems B.V.

2 | Introduction

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The use of the 2-8 MHz frequency band eliminates

disturbance from all 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

information to 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 80 dB

Some of the advantages of this new technology are

described in more detail below.

Characteristics of Infra-red Distribution

Infra-red 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.

Freedom of Movement for Delegates

With an infra-red 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 interpretations are lightweight,

portable and unobtrusive, and can be easily slipped into a

shirt or jacket pocket.

Conference Hall Privacy

Conferences can often involve discussion of sensitive

information, where it is important that any audio

distribution does not compromise security. As infra-red

radiation is unable to pass through opaque structures such

as walls, the congress venue itself acts as a barrier to infra-

red radiation escaping and being overheard.

Language Distribution in Adjacent Halls

Infra-red systems are ideally-suited for conference centers

with a number of separate halls. Since walls are opaque to

infra-red radiation, there is no interference between

separate conferences.

No Interference from Lighting Systems

One of the limitations of traditional infra-red language

distribution systems was interference from lighting. The

problem was particularly acute with newer (fluorescent)

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 distribution.

Freedom from interference from 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 will be compatible with all types

of venue lighting.

Distorted reception (left) with other language distribution

systems, and perfect reception (right) with Bosch Integrus

system

Audio Quality

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, and, as

mentioned above, there is no interference from lighting

systems. Greater intelligibility makes the system less tiring

to use over extended periods. Delegates can therefore

maintain their concentration more easily during a long

conference session.

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Bosch INTEGRUS Specifications Page 6

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