Specifications

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G-WARE SOFTWARE • GATING PARAMETERS
43
Adaptive Ambient adapts the ambient reference level as noise and room
conditions change. When adaptive ambient is on, the mic channel monitors the
ambient noise level on th input and adjust the ambient level reference
automatically. If it is disabled, the input will use the fixed ambient level in the
system parameters as its gating reference. By way of comparison, manual
ambient is used only if adaptive ambient is disabled on one or more of the
individual gating inputs. In that case, the ambient level is referenced to the input
level for that channel. Adaptive ambient default is On.
PA Adaptive Mode uses loudspeaker audio level on a specified output as the
new ambient level when audio is present at the power amplifier. This prevents
loudspeaker audio from gating on the mic, while still allowing people in the room
to gate on microphones as they speak. For example, you might decide to play
background music from a CD player during a presentation. PA Adapt Mode
allows you to use the output routed from the CD player as the ambient reference
to prevent the CD player’s audio from gating on microphones. An output must be
specified as the PA Adaptive Reference for each mic in the system. Default is On.
Next, set the Gate Ratio, Hold Time, Off Attenuation, and Ambient Level in
the appropriate fields by using the
▲/▼ buttons or by highlighting each field with
the cursor and typing in the appropriate number. Then select the Decay Rate
and which PA Adaptive Reference output you wish to use. Refer to the
descriptions of these features below.
Gate Ratio specifies how much louder the audio level must be above the
ambient level before the channel gates on. The gate ratio range is from 0 to
50dB. Default is 15dB.
Hold Time determines how long the channel stays gated on after the audio is no
longer present. The hold time range is from .1 to 8.0 seconds. Default is .3
seconds.
Off Attenuation sets the amount of level reduction applied to a
channel when it is gated off. The range is from 0 to 50dB. Default is 12dB.
Ambient Level manually sets the background noise level upon which the
XAP 800 bases gating protocols. This is used only if the Adaptive Ambient feature
isn’t used. The range is from -80 to 0dB. Default is Off.
Decay Rate determines how fast a channel gates off after the hold time expires.
Default is Medium.
PA Adapt and AEC Reference determines which (speaker) output is used as a
reference for this input. If you select an output located elsewhere on the
Expansion Bus, the Define PA Adapt Expansion Bus Reference window appears
(page 44). From this window, select the unit and output you desire. See PA
Adaptive Mode (above) for more information.
The PA Adapt
Reference and
AEC Reference
are the same for each
channel. For example, if
you change the PA Adapt
Reference for a channel,
you will also make the
same change to that
channel’s AEC
Reference.
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