GRASS VALLEY XIP-3901, Руководство пользователя

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Configuring the XIP - 3901 - UDC - IP v1.2 Application with iControl
Mixer Tab
Mixer Tab
This tab provides two 2

1 mixers. Each mixer will adds two new audio mix output channels
that are added to the audio processing path: Mixer - CH1 and Mixer - CH2 . These channels
are available as inputs to other audio processing tabs. See also Overview of
XIP - 3901 - UDC - IP Audio Processing , on page 154.
All incoming audio channels are available for mixing:
Property Description
Status Shows audio group 1 to 4 detection for embedded audio:
Green: Audio Group present
Grey: Audio Group not present
Signal is present and detected audio type is PCM
Signal is present and detected audio type is NPCM
Signal is present and detected audio type is Dolby E
Signal is present and detected audio type is Dolby Digital (Dolby D)
Signal is present and detected audio type is Dolby Digital plus (Dolby D+)
Signal not present because a silence of -60 dBFS or less was detected for over 3
seconds
Level Sets input gain level for an audio channel. At -96dB, the signal is completely muted.
You can mouse over the level setting to see the available range. The range is always -96 to
12dB and can be set in 0.5 dB steps. By default no gain level is applied (0 dB).
This setting has no effect on a non-PCM audio channel except if this level is set to -96dB
(signal is muted).
This feature requires the
XIP - 3901 - UDC - AUD option. See Options Panel , on page 166 for
details about how to activate card options.
Delay You can delay or advance audio from the nominal value, in order to deal with problems
such as lip-sync errors and audio phase alignment in the incoming feed.
You can delay of up to 500 ms in steps of 1ms. To advance audio, you need first to delay
the video. Video can be delayed up to 6 fields/frames. As an example, if you delay
1920x1080p59Hz output by 2 frames, you can advance the audio by up to 66ms.
At any time you can mouse over this field to see the current available fixed delay range. By
default no fixed delay is applied (0ms).
A fixed delay can still be used with non-PCM signals, but you must use the same delay
values for the left and right channels to preserve signals such as Dolby E.
This feature requires the
XIP - 3901 - UDC - AUD
option. See Options Panel , on page 166 for
details about how to activate card options.
Phase Invert Set to phase invert an audio channel. This setting has no effect on a non-PCM audio
channel. By default, phase invert is disabled.
This feature requires the
XIP - 3901 - UDC - AUD
option. See Options Panel , on page 166 for
details about how to activate card options.
Mute Set to mute an audio channel. By default, mute is disabled.