ATEIS ECS User Manual
Page 43
ECS MANUAL
Version EN.1
43
Adjust the local echo suppressors of the local sources
If you have a local amplification, the purpose of this step is to turn on the local amplifier application
and to turn off the signal coming from the other side. Only the far-in signals (microphones) are
allowed in the speakers.
10)
Enable the local sources in the mixer of the local amplification mute the far-end signal
coming from the other side.
11)
Make adjustment of Pre-Threshold of LES (Maximum audio level).
12)
Make adjustment Post-Threshold of LES (Minimum audio level).
By default, the Pre-Threshold and Post-Threshold are set as -22dB and -40dB in table microphones. If
output volume of near end in LES is increased, it is essential to decrease Pre-Threshold level to
suppress the local audio echo feedback.