Cobalt Digital Inc 9305 Product Manual page 50

3
Table 3-2 9305 Function Submenu List — continued
• Up Mixer Mode Control
• Up Mixer Status Display
• Auto Crossfade Speed Controls
3-24
9305 Function Submenu List and Descriptions
(continued)
Enables or bypasses upmixer as follows:
• Auto: Automatic enable/bypass of 5.1 upmix function as follows:
• If detected signal level on all four of the selected channels
designated as Center, LFE, Left Surround, and Right Surround
are below the level threshold set using the 5.1 Detection Threshold
control, upmixer overwrites all six selected channels with the new 5.1
content generated by the upmixer.
• If detected signal level on any of the four of the selected channels
designated as Center, LFE, Left Surround, and Right Surround is
above the level threshold set using the 5.1 Detection Threshold
control, upmixer is bypassed and the original channels pass
unaffected.
• Always Upmix: Manual enable turns on upmixer and overwrites content
on all six selected channels with new 5.1 content generated by the
upmixer regardless of original signal level or content.
• Bypass: Manual disable bypasses the upmixer. When bypassed, the six
audio channels pass unaffected.
Shows activity status of upmixer processing as follows:
• Auto Mode - Currently Up Mixing Audio: With upmixer enable set
to Auto, indicates selected channels designated as Center, LFE,
Left Surround, and Right Surround are clear for use (as described
above); upmixer is currently up-mixing received stereo pair and
overwriting the six selected channels with new 5.1 upmix.
• Auto Mode - 5.1 Detected Up Mixing Disabled: With upmixer
enable set to Auto, indicates selected channels designated as
Center, LFE, Left Surround, and Right Surround have content
(such as existing original 5.1 or other content); upmixer is bypassed
and allows normal passage of six selected channels.
• Upmixing: Indicates upmixer is manually enabled (set to Always
Upmix) and is currently up-mixing received stereo pair and
overwriting the six selected channels with new 5.1 upmix.
• Bypassed: Indicates upmixer is manually disabled (set to Bypass)
and is currently passing all selected channels unaffected.
Individual controls select the relative crossfade transition speed between
Upmixing (active; going from 2.0 to 5.1) and Disabled (inactive; going
from 5.1 to 2.0) modes when upmixer enable is set to Auto and the active
threshold (as set by the 5.1 Detection Threshold control) is crossed in
either direction.
To suit program material and production aesthetic preferences, several
choices are available as shown to the left. Slower settings allow for a
more gradual transition between modes, however with a longer interval
before levels stabilize. Faster settings conversely allow for a smaller
interval before levels stabilize, however with greater perceived
abruptness.
9305 PRODUCT MANUAL 9305-OM (V4.1)