Extron electronics DMP 64 User Manual page 50

In the example in figure 33, input 1 is sent to the virtual bus send by muting all 4 outputs
on the input 1 primary mix-points. The virtual bus now serves as additional signal
processing for the input. The signal routes over virtual bus A and through the signal chain
before being sent to the virtual bus return mix-point and output 1.
This configuration is useful when more than one input requires identical processing. For
example if all inputs were normalized but required a uniform gain to bring them up
to adequate output levels, rather than changing each pre-mix gain control by a similar
amount, all six inputs could be routed to virtual bus A. Then, using the virtual bus A
return gain control, a single adjustment can be used to apply the same gain to all six
inputs before sending the signal to the desired output line.
In other cases, if multiple microphone inputs are being mixed with program material, only
the program material might require loudness contouring. So the microphones could be
routed directly to the output but the program material input could be routed to the virtual
bus return where loudness contouring could be applied. The program material could then
be routed to the same output as the microphones.
Inputs
1 Mic/Line Input 1
GAIN FLT
2 Mic/Line Input 2
GAIN
FLT
3 Mic/Line Input 3
GAIN
FLT
4 Mic/Line Input 4
GAIN
FLT
5 Mic/Line Input 5
GAIN
FLT
6 Mic/Line Input 6
GAIN FLT
Virtual Bus Return
A FLT FLT
B
FLT
C
FLT
D
FLT
Figure 33.
FBS DYN DYN DLY GAIN
DUCK
GAIN
FBS DYN DYN DLY DUCK
GAIN
FBS DYN DYN DLY DUCK
GAIN
FBS DYN DYN DLY DUCK
GAIN
FBS DYN DYN DLY DUCK
FBS DYN DYN DLY GAIN
DUCK
DYN DYN LOUD LOUD GAIN GAIN
DYN GAIN
LOUD
DYN LOUD GAIN
DYN LOUD GAIN
Input 1 to Virtual Bus A
TRIM TRIM DLY DLY FLT FLT DYN DYN VOL VOL
LOUD LOUD
TRIM VOL
LOUD DLY FLT DYN
TRIM DLY FLT DYN VOL
LOUD
TRIM DLY FLT DYN VOL
LOUD
Outputs
A B C D
Virtual Bus Send
DMP 64 • Operation
1
2
3
4
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