KP-3016/KP-3016A Series
KP-3016/3016A Menu System 87
Bosch Security Systems, Inc.
Technical Manual
F.01U.315.927
Rev. 02
Audio Options Menu, Advanced
•
AGC
•
Compression
•
Filters
•
Gating
•
Metering
•
Mixing
•
Mix Mode
•
Noise Gate
AGC
The
AGC (
Automatic Gain Control) menu is used to set the speed at which a microphone becomes active and the speed at
which a sustainable level is achieved through the use of the Attack menu and the Decay menu. You can set these levels for the
panel microphone and the headset microphones used with the keypanel.
Attack
The
Attack
menu item is used to set the speed at which the microphone gets to the activation threshold, the point where
the circuit determines if the noise is a voice. The smaller the attack time, the faster the mic turns on.
Available options for this menu are:
0.5ms
1ms (d)
2ms
Decay
The
Decay
menu item is used to set the speed at which the gain transitions to silence during release.
Available options for this menu are:
500ms
750ms (d)
1000ms
FIGURE 22.
Automatic Gain Control Example