Echo Reduction (Firmware <4.X Only); How It Works; Enabling Echo Reduction; Using A Third-Party Control System - Shure MXA910-60CM User Manual

Echo Reduction (Firmware <4.x only)
In audio conferencing, a talker may hear their voice echo as a result of the microphone capturing far­end audio from loud­
speakers.
The echo reduction feature prevents the far­end signal from activating the microphone. Ideal for installations in which per­chan­
nel DSP echo cancellation is not within a project budget, echo reduction is highly effective for connecting directly to a computer
or video codec which hosts a single-channel echo canceller.

How It Works

An echo reference signal from the far end is routed through Dante Controller software to the microphone's processing algo­
rithm. The processor uses this signal to prevent the microphone from gating on and capturing audio from the loudspeakers.

Enabling Echo Reduction

1. Use Dante Controller software to route the incoming far end audio signal to the Echo Reduction Reference In channel
on the MXA910.
2. In the MXA910 web application, enter Configuration> AUTOMIX
3. Enable echo reduction by selecting a strength setting in the pull-down menu. Soft, medium, and hard settings provide
far-end attenuation and apply gain to the reference channel to ensure proper gating.Note: the off-attenuation setting
changes to -56 dB, and the Leave last microphone on setting is set to OFF when echo reduction is enabled.

Using a Third-Party Control System

This device receives logic commands over the network. Many parameters controlled through Designer can be controlled using
a third-party control system, using the appropriate command string.
Common applications:
• Mute
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