Grass Valley Maestro Master Control v.1.7 - Manual (Page 137)

Maestro Channel Branding User Guide 133
3rd Step: Audio Sets
Figure 103. 5.1 Surround to Stereo Down Mix
Recommended Audio Mapping Values
The following section outlines recommended values for up-mixing and
down-mixing various kinds of audio groups. These values have been care-
fully tested and represent a good compromise of performance over a wide
variety of program material. Other mappings are possible, but we recom-
mend that you start with these values.
Mono Sources
Figure 104 shows surround mixing with a mono source mapped to the
center or dialog channel of the surround output. This is the recommended
practice by many surround producers. However, some listeners prefer to
hear something from the left and right speakers even with mono sources.
Others prefer to always have something in the center or dialog channel. In
Figure 105 and Figure 106 are shown two other approaches to mono up-
mixing.
The choices are:
• Mono-to-stereo (mono spread equally over left and right)
• Mono-to-surround (mono mapped to surround three different ways)
• Mono-to-mono (1:1 mapping)