Appendix
32
Session-at-Once (SAO)
As a writing method that combines the advantages of the above-mentioned “Disc-
at-Once” and “Track-at-Once,” you can combine multiple tracks into one session
and write them, and then add additional data.
For example, this is the writing method used to create a CD EXTRA format CD.
The music tracks will be recorded in the first session, and the data will be
recorded in the second session.
Lead-in
Lead-out
Lead-out
/Lead-in
Data
Audio
Audio
Audio
0
650MB
Track 1
Track 2
Track 3
Track 4
Session 1
Session 2
