ATEIS IDA8C - Manual (Page 297)

Components of Audio Processor 297
© 2012 ATEÏS
As the noise level is near than during the calibration, the differential level is almost null. You can see
the AGC level near from 0 dB, meaning no compensation.
Increase Zone:
If the sensing microphone detects more noise than during the calibration, the A.N.G works in the
"Increase Zone" which means that the gain must be increased to compensate the ambient noise.
In our example, the noise is now louder than during the calibration. The differential level is around
4.4dB. You can see the AGC level at 3,5dB, meaning the (P.M) signal is increased of 3,5dB. As
soon as the AGC level reach the level needed to compensate the ambient noise (or the Max Gain),
the A.N.G will goes back in the "Dead Zone".
Fast Increase Zone:
If the sensing microphone detects more noise than during the calibration, the A.N.G works in the