CONSOLE AI | Glossary | 314
NLP (Non-Linear Processing)
NLP increases the power of echo cancellation for difficult acoustical environments. NLP has four settings:
Soft (6dB), Medium (12dB), Aggressive (18dB), and Off. NLP settings are found in the Channel Properties
for Mic/Line Input channels.
Noise Cancellation
A process which removes ambient noise from a signal.
NOM (Number of Open Mics)
Adjusts the output level to maintain a specified gain level based on the number of mics gated on and
routed to an output. Also known as Constant Gain Mode.
Off Attenuation
The amount of level reduction a microphone is given when the microphone is not gated on.
PA Adapt/AEC Reference
This setting determines which output channel (typically a loudspeaker) is used as the reference for AEC.
See also PA Adaptive Mode and AEC.
PA Adaptive Mode
PA Adaptive Mode allows you to specify an output as the ambient reference. This prevents an audio signal
from gating on microphones without interfering with speech from conference participants.
PEQ (Parametric Equalizer)
Definition here.
Phantom Power
Power supplied by Converge Pro units to power condenser microphones. This feature can be switched off
for microphones that do not require phantom power.
Pink Noise
An audio test signal containing all the frequencies in a given audio spectrum, with equal energy in each
octave.
Pre-AEC Cross Point
Setting a Pre-AEC Cross Point in the Matrix bypasses the cross-pointed input audio from the AEC
(Acoustic Echo Cancellation) reference. This is primarily used for sound reinforcement applications to
prevent mic input channel audio from being degraded by AEC artifacts.
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