Televic D-CERNO - 12.4. Microphone preset; 12.5. Microphone Limit

D-Cerno Wired System
Installation and User Manual
Televic Conference Systems
V0.4 - December 6, 2012
37
Each room has a different acoustic. With this setting
it is possible to adjust the sensitivity of the VOX
mode.
The voice activation of a microphone is triggered by a
sound level, adjustable between 0 and -24 dBFs.
12.3.3. Release time
A voice activated microphone will be switched off
when, during a certain time, no sound is detected.
This time is adjustable between 1 and 10 seconds.
12.4. Microphone preset
There are 3 limiter gain presets to choose from. The
choice between these 3 will depend on the distance
between the speaker and the microphone.
This setting influences the sensitivity and the
dynamic range of the microphones.
Each step (far, average and close) causes a halving or
doubling off the distance from the speaker to the
microphone to have the same output level.
Below you can find the relation between microphone
sensitivity preset, used distances between
microphone and speaker and output level.
Relative output level at fixed distance
between microphone and speaker
Close
Level reference
Average
Level reference + 6dB
Far
Level reference + 12dB
Change in distance between speaker and
microphone to obtain the same output
level
Close
distance reference
Average
distance reference x 2
Far
distance reference x 4
There is also a fixed automatic gain reduction setting
that reduces the volume per active microphone
depending on the total number of active
microphones. See graph below:
12.5. Microphone Limit
The maximum open microphones at the same time
can be chosen between 1 and 8.
The value of this menu item is represented by a
number of delegate icons.
e.g. 4 open microphones
On top of the maximum number of active delegates
-12
-10
-8
-6
-4
-2
0
0 5 10
auto gain reduction (dB)
#Mic ON
Auto gain reduction