Shure MXA910-60CM - IntelliMix DSP Blocks

Shure Incorporated
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Noise reduction
Compressor
Delay
To access the DSP blocks, select the IntelliMix tab. When enabled, each DSP block will be colored.
Selecting Bypass IntelliMix will bypass the following DSP blocks: AEC, AGC, noise reduction, compressor, and delay.
DSP Best Practices
Apply DSP blocks only as needed. Run a test of your system without DSP, and then add processing as needed to fix any
issues that you hear in the audio signal.
Unless you encounter video that lags behind audio, set Delay to off.
DSP blocks do not affect whether the automixer gates a channel on or off.
Acoustic Echo Cancellation
In audio conferencing, a far-end talker may hear their voice echo as a result of a near-end microphone capturing audio from
loudspeakers. Acoustic echo cancellation (AEC) is a DSP algorithm which identifies the far-end signal and stops it from being
captured by the microphone to deliver clear, uninterrupted speech. During a conference call, the AEC works constantly to opti
mize processing as long as far-end audio is present.
When possible, optimize the acoustic environment using the following tips:
Reduce speaker volume
Position speakers farther from microphones
Avoid pointing speakers directly at microphone coverage areas
Selecting a Reference Signal for AEC
To apply AEC, provide a far end reference signal. For best results, use the signal that also feeds your local reinforcement sys
tem.
P300: Go to Schematic and click any AEC block. Choose the reference source, and the reference source changes for all AEC
blocks.
MXA910: Route a far-end signal to the AEC Reference In channel.
AEC Settings
Reference Meter
Use the reference meter to visually verify the reference signal is present. The reference signal should not be clipping.
ERLE
Echo return loss enhancement (ERLE) displays the dB level of signal reduction (the amount of echo being removed). If the
reference source is connected properly, the ERLE meter activity generally corresponds to the reference meter.
Reference
Indicates which channel is serving as the far end reference signal.
Non-Linear Processing
The primary component of the acoustic echo canceller is an adaptive filter. Non-linear processing supplements the adaptive
filter to remove any residual echo caused by acoustic irregularities or changes in the environment. Use the lowest possible
setting that is effective in your room.