Each event in a log has a transition type, shown in the
Trans
column of the Edit Log dialog. The transition type determines what
happens when one event in a log ends and the next starts. Three basic
transition types can exist in a Rivendell log:
PLAY,
SEGUE and
STOP.
If an event has a PLAY transition,
then it will begin playing when
the previous event has finished.
PLAY transitions are used when
automatic event sequencing is desired with no audio overlap (such
as when playing two voice-only announcements back-to-back).
SEGUE transitions are similar to
PLAY transitions, with one key
difference: if the finishing event contains segue data (either from
the Library or from a custom transition programmed in the voice
tracker), then the event will start before the prior event is
finished, causing the two pieces of audio to overlap and mix together.
SEGUE transitions are a very
powerful tool for creating a variety
of special effects, particularly when used in conjunction with
musical material.
As the name implies, STOP
transitions cause execution of the log to
be suspended prior to execution of the event. This is often the
desired behavior in situations where the log playout needs to be
synchronized to one or more external audio sources (such as remote
satellite feeds), and is commonly used in conjunction with Hard
Timed events (see Section 5.3, “Time and Time Types”).