ATEIS ECS - Manual (Page 51)

ECS MANUAL
Version EN.1
51
LOCAL ECHO SUPPRESSOR COMPONENT
This component is designed for suppressing local Echo or feedback.
It's shared in two parts, pre-processing and post-processing.
The Pre-Processing limits the level to a threshold above which the gain will be reduced. This is to
avoid feedback.
The Post-Processing removes the echo below a threshold. This is to avoid the residual echo.
The control window of the "Local Suppressor Echo" module is opened by a double click on the icon
in the DESIGN AREA and appears like this:
Local Echo Suppressor Parameters
Parameter Range Comment
Bypass Button Switches off the component operations
Gain Reduction Display the gain of output volume.
Pre-Processing > Threshold
(dB)
-40 to 0
(dB)
When input volume is bigger than Pre-Processing Threshold ,it
will Reduce the volume to Threshold.
Pre-Processing > Attack Time
(ms)
1 to 100
(ms)
The time needed to change the volume from original level to the
expected level.
Pre-Processing > Release Time
(ms)
100 to 5k
(ms)
The time needed to change the volume from expected level to the
original level.
Post-Processing > Threshold
(dB)
-40 to -20
(dB)
When input volume is smaller than Post-Processing Threshold ,it
will suppress the residue echo sound.
Post-Processing > Attack Time
(ms)
1 to 100
(ms)
The time needed to change the volume from original level to the
expected level.
Post-Processing > Release Time (ms) 100 to 5k
(ms)
The time needed to change the volume from expected level to the
original level.