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Linear Acoustic upMAX 2251 User Guide
3.1.1
Two-Channel Commercials and Interstitial Programming
One of the largest complaints viewers of digital and high definition television pro-
gramming is the annoying fact that stereo commercials don't seem to "fit" into the
5.1-channel program. This is because in many cases, the commercials are simply
transmitted on the Left and Right channels of a 5.1-channel program. The net result
is that during the program, dialogue comes from the center speaker, but at commer-
cial or station breaks, all of the dialogue comes from the left and right speakers. It can
be a jarring experience.
The first application is one where the
lowing it to fit nicely within a 5.1 channel program. Figure 3-1 shows this scenario.
Two-Channel
Local Plant
Figure 3-1
Linear Acoustic
MAX 2251
UP
Main Input
Lt/Rt
Mix Input
X
C/LFE
Mix Input
X
Ls/Rs
Mix Input
X
Lf/Rf
AES REF
MAX 2251
in a commercial upmixing application
UP
14
MAX 2251 processes the stereo material al-
UP
Main Out
Lf/Rf
Main Out
C/LFE
Main Out
Ls/Rs
Aux Out
Lt/Rt
IN
Applications
5.1 Channel
Main Output
Two-Channel
Utility Output
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