5.5.
Audio Proc Amp
Setting
Description
Audio-Phase
If this setting is set to Align, the card ensures audio-phase alignment between
multiple audio channels and audio groups, which is necessary for multi-channel
(surround) purposes. If errors in the signal-chain occur the de-embedder blocks
reset synchronously to maintain audio-phase-alignment.
If this setting is set to Off, the card eats-all audio including errors. Even if there
are DBN/ANC/ECC or channel-sequence errors, the de-embedder will pass
them. Be aware that audio-phase-alignment between multiple audio channels
and audio groups can not be maintained if this setting is set to Off.
This setting can be helpful to solve problems in the field using equipment which doesn’t
follow the standards correctly.
AudioStatusBits
With this setting you select whether the audio status bits should be Transparent
(off) (same status bit on the outputs as on the inputs) or to overwrite (on) them
with new status bits.
emb_aud_hand_A
Embedded audio handling. This card has a built-in embedder, de-embedder
and audio gain stage. This menu item controls the functionality of these stages.
•
Blank: blanks the horizontal blanking.
•
Pass: passes the audio un-processed.
•
Process: controls the ‘smart’ audio handling.
‘smart’ audio handling: the selected groups in the following Grp-A-Sel and Grp-
B-Sel setting item are de-embedded. The audio is routed through an audio gain
stage and is re-embedded in the selected group afterwards. This is performed
after the frame synchronizer. When a video (+embedded audio) frame needs to
be rewritten or removed as a result of an asynchronous SD/HD/3Gb/s input, the
audio gain stage ramps down the selected group prior to the action and ramps
up afterwards. This whole process masks audio irregularities that are audible in
a normal Frame synchronizer. When using the Pass setting DOLBY-E is
transfered with minimum delay.
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| November 2021 | Issue 1.00.E
