Advanced Aec Controls - Extron electronics DTP CrossPoint 4K Series User Manual

If you do want the reference signal to track with changes in listening volume, and want more
control over the actual reference level, ensure the following:
1.
Route the far end signal to both the amplifier output and the virtual (unused) output.
2. Create a group master control that contains the amplifier output and virtual output. Set
soft limits for the group master control, as desired.
3. Set optimal level for the amplified output. Set optimal level for virtual output. Relative
levels between both settings are maintained using the group master control.

Advanced AEC Controls

Click on the open/collapse icon ( ) at the bottom of the AEC dialog to
reveal the advanced AEC controls.
Advanced control functionality consists of:
• Non-linear processing (NLP) controls
Additional controls
•
NLP controls
1 Enable NLP — This box is selected by default. NLP is necessary
for the removal of echo.
2
NLP Presets — Click a button to load pre-set values to the three
NLP parameters defined below (
• Soft
• Normal
• Aggressive
3 Max NLP Reduction — The maximum possible reduction in echo artifacts that can be
applied. The range is 0.0 to 80.0 dB in 0.1 dB increments. Default = 50.0 dB.
4 Attack Time — The speed in which NLP is applied. The range is 0.0 to 100.0 msec in
0.1 msec increments. Default = 6.0 msec.
5
Release Time — The speed in which NLP is released. The range is 1.0 to 3000.0 msec
in 0.1 msec increments. Default = 150.0 msec.
Additional controls
6 Double Talk Echo Reduction – The amount of echo reduction applied during
double-talk. The range is 0.0 to 20.0 dB in 0.1 dB increments. Default = 15.0 dB.
7 Comfort Noise – A comfort noise level in dB to eliminate states of complete silence,
which could be perceived as a failed connection. The range is 0.0 to 40.0 dB in 0.1 dB
increments. Default = 0.0 dB (comfort noise off).
3 through 5 ).
DTP CrossPoint 4K Series Matrix Switchers • Matrix Software
1 1 1 1 1 1 1 1 1 1
2 2 2 2 2 2 2 2 2 2
3
4
5
6
7
142