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4
4.7.3 Audio Detection
The camera can detect for abnormal audio volume. When the rise or fall of volume exceeds
the set limit, or when the input volume reaches the threshold, the camera reports an alarm
and triggers the set actions. Make sure an audio input device is correctly connected to the
camera and audio input is enabled.
Note:
To add an audio input, see
4.7.
4
Alarm Input
.
Figure 4-40
1. Select
Enable
to activate
Audio Detection
.
2. Select a
Detection Type
.
Rises Above / Sudden Rise
: An alarm is reported when the rise of volume
exceeds the difference.
Falls Below / Sudden Fall
: An alarm is reported when the fall of volume exceeds
the difference.
Passes / Sudden Change
: An alarm is reported when the rise or fall of volume
exceeds the difference.
Threshold
: An alarm is reported when the volume exceeds a threshold.
3. Set a
Threshold
or
Difference
.
Threshold
: After a volume is set as the threshold, an alarm is reported when the
threshold is exceeded.