ATEIS Messenger Series - Manual (Page 19)

Messenger Operating Manual
Page 19 of 38
9.4.2. Ambient noise following.
If Ambient noise following is activated the secondary input is turned into a measuring input.
This input accepts line signals. If a sensing microphone is connected we advise you to use
the SD 1 expansion input board. For all the details of the SD 1 expansion board we refer to
the appendix.
Max gain; determinates the maximum additional amplification.
Trigger level; is the point where the additional amplification starts.
The LED lights up when the trigger level is reached.
Correction; is the ratio between the level above trigger level and the increase in volume gain.
Example (correction is set at 30%):
if the Ambient noise level is 10dB above trigger level the volume gain will be 3 dB.
Speed; (slow – medium – fast) sets the reaction to changes the sensing
microphone is reregistering.
9.4.3. VOX
In this setting the secondary input can be used as alarm input.
If the audio level, on the secondary input, reaches a certain level
this signal overrides the primary input.
Trigger level; sets the point where the secondary input becomes active.
The LED lights up when the trigger level is reached.
Sustain; sets the hold time of the Vox in seconds.
9.4.4. Ambient noise following and Vox both on.
When those two functions are set on together the Ambient noise following function is set
with an extra feature. The Vox is now working as a threshold on the primary input.
This feature means that if the audio level on the primary input reaches the trigger level the
Ambient noise sensing is stalled at the correction value of that moment.