User Guide| LQ Series 4.0
8.7
Port settings
l Label: Clicking/touching the blue label header will allow you to change the
name of the port. Enter the new name and click the blue check mark to apply
changes.
l Multi-Channel support: Enabled/Disabled. Enable this option to use the audio
source in more than one Channel or direct connection.
8.8
VOX (audio-gating)
The VOX setting has several functions:
l VOX can be used to maximise bandwidth efficiency by detecting when the line
is silent and not transmitting at those times.
l VOX can be used to trigger a Network Control Event (used for sending and
receiving GPIO signals) when audio is detected in the Channel.
l VOX can be used to eliminate unwanted noise, for instance, low level ambient
or background noise.
l VOX mode: Disabled/Fixed Threshold/Adaptive.
If Disabled, VOX is not activated and Network Control Events cannot be configured.
Audio is still detected in the Channel, so audio light will show.
Fixed Threshold: triggers VOX detection (audio gating) according to a fixed level .
Enabling this option automatically enables Threshold and VOX Delay.
Adaptive: sets the audio trigger according to an automatically calculated 'noise
floor'. This option implements comfort noise when silence is detected. Only the Off
Delay option is activated with this setting. The Adaptive threshold is not suitable for
transmitting music.
l VOX Off Delay: 0.5 to 4 seconds. Delays the deactivation of the noise gate to
allow the signal to stabilize.
l VOX Threshold: 0 to -42 dB (default = -22 dB). Set the level at which audio is
considered valid in the Channel.
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