Device Window – Priorities Tab
Ducker
Description
Each of the twelve DX1208 Inputs and 16 DX Link Inputs is equipped with a Ducker. On the
twelve Input Channels the Ducker occurs in between the six-band EQ and the Matrix Mixer.
On the DX Link Inputs the Ducker occurs immediately after the DX Link
Mute
and
Gain
. The
Ducker is the only DSP process that is employed on the DX Link Input Channels.
Duckers are designed to lower the volume of one or more input sources to allow one or more
different input sources to be clearly heard. Duckers are based on the concept of assigning a
‘priority’ to each input, which describes how important it is for listeners to hear that source in
relationship to all of the other sources. Sources with a higher priority take precedence over
sources with lower priorities. The DX1208 Ducker supports 5
Priority
levels with adjustable
volume
Depths
for each. Ducker
Priorities
can be triggered from Logic Inputs, Remotes, and
from signals whose level exceeds a specified
Threshold
. The rate at which the Ducker
changes the volume during and after a priority trigger can also be adjusted.
As an example of how a ducker might be used in practice, a typical airport may have many
different sources that can be broadcast over the public address system, from background
music, to airline representatives announcing flight boarding and departure information, to
airport management issuing public service messages, and finally to public officials making
airport-wide emergency safety and security alerts. The background music channel is the least
important source and is assigned the lowest priority, while the safety and security channel is
the most important and is assigned the highest priority. When an airline representative makes
a boarding announcement, the music is ‘ducked’ in volume so that the representative can be
heard over the music, but if a security announcement is broadcast at the same time the airline
rep is making a boarding call, both the music and the representative will be ‘ducked’ so that
only the security announcement can be heard.
The Priorities tab contains all of the parameters for the Input Channel Duckers, which are
shown below.
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Summary of Contents for DX1208
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