Automatic Gain Control (Agc); Noise Reduction; Compressor - Shure IntelliMix P300 Manual

Non-Linear Processing

Automatic Gain Control (AGC)

Automatic gain control adjusts channel levels to ensure consistent volume for all talkers, in all scenarios. For quieter voices, it
increases gain; for louder voices, it attenuates the signal.
Automatic gain control is post­fader, and adjusts the channel level after the input level has been adjusted. Enable it on chan­
nels where the distance between the talker and the microphone may vary, or in rooms where many different people will use the
conferencing system.
Target Level (dBFS)
Represents the level that you want the gain to reach. This level is different from adjusting the input fader according to peak
levels to avoid clipping. Suggested starting points:
◦ P300: -32 dBFS
◦ MXA910: -37 dBFS
◦ IntelliMix Room: -32 dBFS
Maximum Boost ( dB)
Sets the maximum amount of gain that can be applied
Maximum Cut ( dB)
Sets the maximum attenuation that can be applied
Tip: Use the boost/cut meter to monitor the amount of gain added or subtracted from the signal. If this meter is always reach­
ing the maximum boost or cut level, adjust the input fader so the signal is closer to the target level.

Noise Reduction

Noise reduction significantly reduces the amount of background noise in your signal caused by projectors, HVAC systems, or
other environmental sources. It is a dynamic processor, which calculates the noise floor in the room and removes noise
throughout the entire spectrum with maximum transparency.
Settings
The noise reduction setting (low, medium, or high) represents the amount of reduction in dB. Use the lowest possible setting
that effectively lowers noise in the room.

Compressor

Use the compressor to control the dynamic range of the selected signal.
The primary component of the acoustic echo canceller is an adaptive filter. Non­linear pro­
cessing supplements the adaptive filter to remove any residual echo caused by acoustic ir­
regularities or changes in the environment. Use the lowest possible setting that is effective in
your room.
Low: Use in rooms with controlled acoustics and minimal echoes. This setting provides the
most natural sound for full duplex.
Medium: Use in typical rooms as a starting point. If you hear echo artifacts, try using the
high setting.
High: Use to provide the strongest echo reduction in rooms with bad acoustics, or in situa­
tions where the echo path frequently changes.
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