Cobalt Digital Inc 9903-UDX-ADDA Product Manual page 63

Operating Instructions
Table 3-2 9903-UDX-ADDA Function Menu List — continued
• Downmixer Source Controls
• Center Mix Ratio Control
• Surround Mix Ratio Control
9903UDXADDA-OM (V1.5)
9903-UDX-ADDA Function Menu List and Descriptions
Provides audio down-mix audio routing selections that
multiplexes any five audio channel sources into a
stereo pair.
Left Channel Input thru Right Surround Channel Input select the five
audio bus source channels to be used for the downmix.
Downmix channels Downmixer L and Downmixer R are available as
sources for embedded, AES, or analog audio outputs using the Channel
Source controls described above.
Adjusts the attenuation ratio of center-channel content from 5-channel
source that is re-applied as Lt and Rt content to the DM-L and DM-R
stereo mix.
• 0 dB setting applies no ratiometric reduction. Center channel content is
restored as in-phase center-channel content with no attenuation,
making center-channel content more predominate in the overall mix.
• Maximum attenuation setting (-80 dB) applies a -80 dB ratiometric
reduction of center-channel content. Center-channel content is restored
as in-phase center-channel content at a -80 dB ratio relative to overall
level, making center-channel content less predominate in the overall
mix.
(20 dB to -80 dB range in 0 dB steps; default = 0 dB)
Note: Default setting is recommended to maintain center-channel
predominance in downmix representative to that of the original
source 5-channel mix.
Adjusts the attenuation ratio of surround-channel content from 5-channel
source that is re-applied as Lo and Ro content to the DM-L and DM-R
stereo mix.
• 0 dB setting applies no ratiometric reduction. Surround-channel content
is restored with no attenuation, making Lo and Ro content more
predominate in the overall mix.
• Maximum attenuation setting (-80 dB) applies a -80 dB ratiometric
reduction of surround-channel content. Surround-channel content is
restored at a -80 dB ratio relative to overall level, making
surround-channel content less predominate in the overall mix.
(20 dB to -80 dB range in 0 dB steps; default = 0 dB)
Note: Default setting is recommended to maintain surround-channel
predominance in downmix representative to that of the original
source 5-channel mix.
9903-UDX-ADDA PRODUCT MANUAL
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