Operation Manual; Automixing Group Controls; Auto-mix - Page 62

Operation Manual

DBC Network Bridge

page 62

Automixing Group Controls

Access the 

Automixing Group Controls

 (Figure 5.25) by pressing the 

Auto-mix 

Groups

 button in the 

Signal Path

 window.

There are two group controls and two group indicators for this feature:

1. Priority Mix Enable

Turns Ducking Priority Mix on and off for the automix group.

2. Max Number of Open Mics

Sets the max number of open mics within the automix group. A last-in, first-out algo-
rithm is used to determine which mics are ducked.

3. Highest Open Mic Priority Indicator

Shows the highest priority level for all open mics within the automix group.

4. Total Number of Open Mics Indicator

Indicates the total number of presently open mics within the automix group.

NOM (Number of Open Mics) Attenuation 

reduces overall system gain as the 

number of open mics increases beyond one for improved gain before feedback.

There are three group controls for this feature:

5. Enable

Turns NOM Attenuation on and off within an automix group.

6. Mode

Sets the attenuation algorithm to linear or logarithmic. In linear mode, each open mic 
beyond one will cause all inputs in the auto-mix group to be attenuated by an amount 
equal to the Attenuation Step Size, defined below.

Logarithmic mode:

 the attenuation per open mic will decrease as more mics open. 

Logarithmic mode with Attenuation Step Size of 3dB emulates 'classic' NOM attenua-
tion schemes.

Linear mode: 

allows each individual mic to use a higher nominal gain by more 

aggressively attenuating as more mics open.

7. Step Size

With NOM Attenuation mode, determines the attenuation as a function of the number of 
open mics in the auto-mix group. In linear mode, each open mic beyond one increases 
the attenuation by this amount. Control range is from 0.5 to 3dB in 0.5dB steps.
   

5 Advanced Operation

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Figure 5.25  Automixing Group Controls Window