Music Input Fade Up And Down Time Configuration - ASL INTERCOM VAR4 Operation Manual

9.1.2

Music Input Fade Up and Down Time Configuration

It is possible to specify a fade up and fade down time for the Music inputs. This can be set to provide the
desired changeover fading, e.g. when a broadcast interrupts background music, or a lower priority
broadcast.
This is typically used on background music where a slow fade-up, in particular, is desirable.
The Fade Down time is:
•
The time it takes for the signal to fade down when turned off (un-routed);
•
The time it takes for the signal to fade down before an overriding broadcast is made in its place
The Fade Up time is the time the signal takes to fade up when:
•
Turned on (routed);
•
Override removed.
The fade up and down times will be applied to the routed Music input be it either Music A, or Music B.
The diagram in Figure 5
audio source (e.g. background music).
Figure 7 Sequence of Events for Single Audio Source
MUSIC
FADE UP=T1
FADE DOWN= T2
ON
OFF
The diagram in Figure 6
by a Paging Microphone with chime.
Note that the background music Fade Down time (T2) not used in this instance. Instead the microphone
Fade Down time (T4) is used.
VAR4 / VAR12 / VAR20 - Operation Manual
illustrates the sequence of events during the enabling and disabling of a single
T1
illustrates the sequence of events during the override of a background music source
Is sue: 03 complete, approved
MUSIC AUDIO
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T2