Extron Electronics DMP 64 User Guide - Manual (Page 74)

In the example below (see figure 45), input 1 is sent to the virtual bus send by muting all
four signals 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 can be routed to virtual bus A. Then, using the virtual bus A return
gain control, a single adjustment can 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. The microphones can be routed
directly to the output while the program material input is routed to the virtual bus return
where loudness contouring can be applied. The program material is then routed to the
same output as the microphones.
Mic/Line Input 1
Mic/Line Input 2
Mic/Line Input 3
Mic/Line Input 4
Mic/Line Input 5
Mic/Line Input 6
A
B
C
D
1
2
3
4
5
6
A B C D
1
2
3
4
Outputs
Virtual Bus Send
Virtual Bus Return
FILT DLY LOUD DYN VOL TRIM
FILT DLY LOUD DYN VOL TRIM
FILT DLY LOUD DYN VOL TRIM
FILT DLY LOUD DYN VOL TRIM
GAIN GAIN FILT FBS DYN DYN DLY DUCK
GAIN GAIN FILT FBS DYN DYN DLY DUCK
GAIN GAIN FILT FBS DYN DYN DLY DUCK
GAIN GAIN FILT FBS DYN DYN DLY DUCK
GAIN GAIN FILT FBS DYN DYN DLY DUCK
GAIN GAIN FILT FBS DYN DYN DLY DUCK
Inputs
FILT DYN GAIN LOUD
FILT DYN GAIN LOUD
FILT DYN GAIN LOUD
FILT DYN GAIN LOUD
GAIN FILT DYN LOUD
FILT DLY LOUD DYN VOL TRIM
Figure 45. Input 1 to Virtual Bus A
DMP 64 • Software Control 68