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AEC REFERENCE/PA ADAPT REFERENCE TAB
The AEC Reference (880, 880T, 880TA, 840T, 8i, TH20)/PA Adapt Reference (SR 1212, SR 1212A) Tab
allows you to establish reference sources for Acoustic Echo Cancellation (AEC) and PA Adaptation. AEC uses
reference signals as the basis for acoustic echo cancellation. An AEC reference is a digital sample of the receive
audio signal that is used by the AEC filter model for adaptation and convergence. A PA Adapt Reference allows
you to specify an output as the ambient reference to prevent an audio signal from gating on microphones (without
interfering with speech from conference participants).
You can use both unit and expansion bus audio sources as AEC and PA Adapt references for the Mic Inputs
connected to a unit. In addition, you can define virtual reference sources that combine multiple audio signals into
a single AEC/PA Adapt reference source. Virtual references improve AEC performance in stereo speaker and
combined audio/video conferencing applications.
Accessing AEC Reference/PA Adapt Reference
To access AEC Reference/PA Adapt Reference, select the unit that you want to define references for in the Tree
View Tab of the Site Pane, then select the AEC Reference/PA Adapt Reference Tab from the Tab Bar in
Console.
The AEC/PA Adapt Reference screen appears in the center pane of Console. AEC/PA Adapt reference
configuration is explained in the following sections.
AEC/PA Adapt References Sources