Audio alarming systems
 Modern PA systems incorporate several functions, with the tendency for
further integration with other technical protection systems. Beside its basic
purpose, which is to enrich the space by broadcasting ambiental music and
the transmission of spoken announcements with an objective of informing
and/or searching for persons, it is becoming increasingly common to
integrate PA systems with fire protection systems. On February 1st 1998,
International agency has adopted the IEC 60849 Sound Systems for
Emergency Purposes directive (the term Evac System is more common in
everyday use).
In short, this directive regulates that all public facilities must be equipped
with audio alarming systems, which will be used for broadcasting prerecorded
messages with instructions for evacuation and procedures in case
of emergency. Instead of sirens, which cause confusion and provoke panic
with their sharp wailing sound, in case the fire protection centre is activated,
people will hear a pleasant voice giving them detailed instructions on how to
behave and what to do in the given situation. Of course, these systems can
be used in other emergency situations, and in regular circumstances they are
used for regular purposes: transmission of ambiental music and spoken
announcements, commercials broadcasting, searching for persons, etc.
Integrated AV systems
The fast development of technology in all areas has lead to the need for the
integration of different systems and technologies into a single infrastructure,
which should enable a simpler flow of information. A modern businessman
can instantly access the local AV system in a modern conference hall and
send the data, photographies, documents, audio and video recordings
wirelessly to the main screen or other participants’ monitors. Digitalized
sound and image can be transferred through the local network to the user,
who can choose the desired contents, regulate the volume and tone of the
sound, decide whether to connect the local microphone, etc. You can also
route the contents from any AV source to the desired location in accordance
with the predetermined scheme, use digital effects in the process of signal
editing, enjoy the perfect sound that surrounds you, as well as the image of
incredible resolution and the realism of reproduced colours, and many more
things…
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