Acoustic Echo Cancellation (Aec); Training The Acoustic Echo Cancellation; Adjusting Settings - Shure P300 IntelliMix Manual Del Usuario

Atenuación máxima ( dB)
Establece la atenuación máxima que se puede aplicar
Sugerencia: Utilice un medidor de aumento/atenuación para controlar la cantidad de ganancia adicionada o sustraída de la
señal. Si este medidor está siempre alcanzando el nivel máximo de aumento o atenuación, ajuste el control de nivel de entra­
da para que la señal esté más cerca del nivel objetivo.

Acoustic Echo Cancellation (AEC)

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 and eliminates echoes to deliver clear,
uninterrupted speech. The P300 features 8 channels of AEC, with independent processing on each channel for maximum ef­
fectiveness.
For best results, improve the acoustic environment when possible:
• Avoid pointing loudspeakers directly at microphones
• Reduce loudspeaker volume
• Position loudspeakers farther away from microphones

Training the Acoustic Echo Cancellation

Training is the process where the AEC optimizes processing based on the acoustic environment. It only trains when far-end
audio is present and near-end talkers are quiet. The AEC is constantly adapting, so if the acoustic environment changes, the
AEC automatically adjusts.

Adjusting Settings

To adjust acoustic echo cancellation settings, open the AEC menu in the schematic view or inputs tab.
Reference Meter
Use the reference meter to visually verify the reference signal is present.
ERLE
Echo reduction loss enhancement displays the dB level of signal reduction (the amount of echo being removed). If connec­
ted properly, the ERLE meter activity generally corresponds to the reference meter.
Reference
Select the channel that carries audio to the loudspeakers as the reference. Analog - To Speaker is the most commonly
used channel, for configurations with an analog loudspeaker system or a display with a built-in speaker.
Note: Selecting a reference on any channel applies that same reference to all channels with AEC.
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.
Low: Use in rooms with controlled acoustics and minimal echoes. This setting provides the most natural sound.
Medium: Use in typical rooms as a starting point. If echo artifacts appear, try using the high setting.
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