ClearOne comm XAP 400 operation manual Gate, System Configuration ~ Inputs and Outputs, Activation

38 System Configuration ~ Inputs and Outputs

Gate

The XAP 400 has unique gating parameters which control microphone activation. The Gate button on the selected input in Inputs 1–4 window opens the Gate configuration window where you can establish the gating parameters for the input.

Activation

There are three mic activation settings: Auto Gate, Manual On, and Manual Off.

•Auto Gate determines mic gating based on the input level and gating settings for the gating group the input is assigned to. It contributes to and is affected by all gating group settings such as NOM, chairman override, etc.

•Manual On activates a mic, provided it does not exceed max NOM

Figure 3.35. Gate window

requirements of the gating group that the input is assigned to. It is included in the NOM count.

•Manual Off deactivates a mic.

Chairman Override

Chairman Override provides gating priority for this mic input over any other mic input within the same gating control (mixer) groups. When a mic with Chairman Override enabled gates on, all mics which don’t have Chairman Override enabled will gate off. Default is off.

Adaptive Ambient

Adaptive Ambient adjusts the ambient reference level as noise and room conditions change. When adaptive ambient is on, the mic channel monitors the ambient noise level on the input and adjusts the ambient level reference automatically. This means that the gate threshold level automatically increases or decreases based on back- ground noise. If Adaptive Ambient is turned off, the input will use the fixed ambient level specified in the Ambient Level box as its gating reference. Default is on.

PA Adaptive Mode

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—provided that their voices are louder than the loudspeaker audio. 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 (this is the same as the AEC reference) for each mic in the system. Default is on.

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