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78
Selenio X100
Installation and Operation Manual
Overwrite Embedding
When you select Overwrite embedding, the X100 attempts to overwrite any existing audio
data and control packets of the same group number with the new audio data. This setting
is valid only if the audio group to be embedded already exists. If the new sample
distribution does not exactly match the existing audio data packet sample distribution, the
embedder marks some audio data packets for deletion (DID word is set to 180h).
Note: To avoid sample distribution problems, activate the ADS Clean feature in the Audio
Embedding > Embedding 1 > Control.
When you attempt Overwrite embedding and there is no previous audio (as in
Figure
3-27), it returns an error because there is nothing to overwrite.
ADS before embedding
EAV
ADS after attempting to embed group 1
EAV
Result : Error is returned
Figure 3-27 Overwrite Embedding Mode When There is No Pre-existing Audio
Figure
shows how overwrite embedding appears in the ancillary data space when there is
ancillary data but no pre-existing group 1 audio.
ADS before embedding
Other
Other
EAV
Ancillary Data
Ancillary Data
A
B
ADS after attempting to embed group 1
Other
Other
Ancillary Data
EAV
Ancillary Data
A
B
Result :
Error is returned
Figure 3-28 Overwrite Embedding Mode Failure
Figure 3-29
shows how overwrite embedding appears in the ancillary data space when
there is pre-existing Group 1 audio. This operation is successful.
ADS before embedding
Pre-existing Group 1
EAV
ADS after embedding group 1
EAV
Group 1
Figure 3-29 Overwrite Embedding Mode When There is Group 1 Audio in the
Group 1 Space
(with overwrite group specified as Group 1)
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