User Manual

From Far-end Input signals from the remote location (the other party)
Far-end Voice Signals from the remote location reproduced by the
speakers of the local location (your side)
Near-end Mic. Input signals from local mics
Near-end Voice Signals from local mics reproduced by local speakers
To Far-end Echo-cancelled signals of local mics sent to the remote
location
■ “To Far-end” screen
In this screen you can make echo-cancel settings for the mics.
The mic signal after echo-cancellation is output to the remote location.
① [Near-end Mic] selection buttons
Here you can select the ports for the local mics (Near-end Mic). When you click a port select button, the “Input
Patch” dialog box will appear. The button shows the currently selected port.
② AEC [ON] button
Switches the echo canceller function on/off.
③ REFERENCE [A][B][C][D] button
These buttons select whether the signal specified by the From Far-end selection will be used as the AEC
reference signal (REFERENCE).
If multiple signals are selected, they will be mixed.
④ Meters
•
Mic In. meter
Indicates the level of the signal that is input from your own mic (Near-end Mic).
•
Ref In. meter
Indicates the level of the reference signal. The most effective echo cancellation will be obtained with a
level at which the yellow indicators light occasionally.
•
Echo Attn. meter
Indicates the amount of echo cancellation for each channel. Higher levels indicate that the echo canceller
is working.
•
ERL meter
ERL Indicates the ERL (Echo Return Loss = the level of the audio that is output from the speaker and re-
input to the mic). Echo cancellation will work most effectively if you adjust the position of the speaker and
15. Audio Processors: MTX5-D/MTX3
262 | ProVisionaire Design V1.2 User Guide