Imagine Selenio X50, Инструкция по установке и эксплуатации, Страница: 93 / 136

X50
Installation and Operation Manual
79
DTS Neural Surround Audio MultiMerge
Overview
The DTS Neural Surround MultiMerge enables broadcasters to transition from stereo to 5.1
surround sound, providing viewers with a 24/7 surround sound experience. With
MultiMerge in line, 5.1 original content is passed unaffected to the viewer while original
stereo content is UpMixed to a 5.1 surround sound image. This provides the viewer with a
consistent surround experience.
The transition between 5.1 and stereo occurs seamlessly without the need of operator
intervention. By offering a 24/7 5.1 signal, AC3 metadata does not transition between 2/0
and 3/2 mode. This prevents audio clicks, pops, and dropouts. The process also avoids
taking “artistic license” with content by placing audio exactly where it would be heard in a
professional LEDE (Live End Dead End) listening environment. For example, mono or
pan-pot stereo will image in front of the listener, whereas stereo containing depth
information, or LtRt encoding, will surround the listener.
You can use the MultiMerge in combination with the DTS Neural Surround DownMix device
to pass 5.1 through stereo-only facilities and therefore eliminate the need for costly master
control upgrades.
Figure 7 shows how the MultiMerge takes a two-channel audio source (stereo, matrix
encoded stereo, LtRt or DTS Neural Surround LwRw) and render a 5.1 multi-channel mix; in
combination with taking original multi-channel content and creating a stereo DownMixed
signal, depending on the input configuration and content source used.
Figure 7. MultiMerge Block Diagram