Sony DMX-R100 Quick Reference page 101

Surround Mixing
5
The DIV (Divergence) control to the right of the Surround Pan display/operation area performs an
important function. It shifts the amount of center-panned signal from the true center to phantom center
(routed equally to the front left and right speakers in order to create a "ghost" image). To demonstrate
how this works, take a steady-state signal (like a pad from a synthesizer) and assign it to MTR buses 1, 2,
and 3 (corresponding to front left, front right, and center). Make sure that the MTR PAN switch is on (lit
green). Then, as the signal plays, slowly change the Divergence control from 0% to 100% (touch the SET
button and use the jog/shuttle wheel to increase or decrease the value). At 0%, the signal is sent equally
to both the center channel and the two front channels (creating equal true and phantom images); as you
increase the Divergence amount, less and less signal is sent to the front left and right channels, until, at
100%, the signal is sent to the true center channel alone.
6
Note that panning moves made within the Surround Pan display/operation area shift signal between
MTR buses 1 - 3 and 5 - 6 only; there is currently no separate subwoofer (bus 4) send level. However,
there is an easy workaround for creating a dedicated subwoofer send: simply mult the channel to a second
channel and assign that channel to MTR bus 4 only. The fader level will then control the send to the sub-
woofer.
7
When doing standard stereo mixing using the PGM bus, the PROGRAM fader acts as master. However,
when mixing in surround using MTR buses 1 - 6, MTR faders 1 - 6 (accessed by pressing the MASTERS
button in the PAGES section) act as masters, allowing you to set independent bus levels. For convenience,
you may want to place MTR bus faders 1 - 6 into a Gang fader control group, allowing you to raise or
lower the overall master level by moving any of the six faders. For premastering or pre-encoding opera-
tions, you can use the equalization and/or dynamics processing sections in MTR bus channels 1 - 6 as
desired.
8
To automate surround sound panning moves, make sure the DMX-R100 is in surround monitoring mode
(as described previously) and then simply arm either the WRITE object in the Input/Pan/Assign window
or the MTR PAN value object (not the on-off switch) in either the Input/Pan/Assign or Channel win-
dow for the selected channel so that a yellow or red underline appears. As long as valid timecode is
received, any trajectories drawn in the Surround Pan display/operation area will be saved as part of an
automated mix (as usual, automated mixes are saved as part of a Title). See Tutorial 3 in this guidebook
for more information about automated mixing operations.
Appendix B Surround Applications
B-7