During the transition period, as applicable for 7.1 content, HI and VI-N will be
placed on channels 7/8 and channels 15/16, and cinemas will need to prepare
for VI-N ultimately being placed on channel 16. This can be resolved either by
channel routing within the digital cinema sever or by appropriate hardware
cabling. The most flexible solution to this transition is to provide a switch,
potentially automated, that allows the input to the audio transmitters to be
switched between channels 8 and 16.
Figure 3 shows a solution that can provide maximum compatibility and
flexibility for signal routing. If an HI track is not present on the DCP, CP650 and
CP750 processors provide an appropriate center-weighted sum of L-C-R analog
output, which is commonly used for this channel.