HIKVISION HiWatch Series User Manual page 74

1) Select Arming Area. Up to 4 arming areas are selectable.
2) Set Sensitivity and Time Threshold.
 Time Threshold range: [5s-3600s]. It defines the time of the objects removed from the region.
If you set the value as 10, alarm is triggered after the object disappears from the region for
10s.
 Sensitivity defines the similarity degree of the background image. Usually, when the
sensitivity is high, a very small object taken from the region can trigger the alarm.
3) Click Draw Area and draw a quadrilateral in the preview window by specifying four vertices of
the detection region.
Step 6 Set the arming schedule. Refer to 6.4.3 Configure Arming Schedule.
Step 7 Set the linkage actions. Refer to 6.4.4 Configure Alarm Linkage Action.
Step 8 Click Apply.
Audio Exception
Purpose
Audio exception function detects the abnormal sounds in the surveillance scene, such as the
sudden increase/decrease of the sound intensity, and some certain actions can be taken when the
alarm is triggered.
Step 1 Go to Configuration > Event > Smart Event > Audio Exception.
Step 2 Select Camera to configure.
Step 3 Optionally, check Save VCA Picture to save the captured pictures of VCA detection.
Step 4 Set the audio exception rules.
1) Check Audio Loss Exception to enable the audio loss detection function.
2) Check Sudden Increase of Sound Intensity Detection to detect the sound steep rise in the
surveillance scene. You can set the detection sensitivity and threshold for sound steep rise.
 Sensitivity: Range [1-100], the smaller the value is, the more severe the change should be to
trigger the detection.
 Sound Intensity Threshold: Range [1-100], it can filter the sound in the environment, the
louder the environment sound, the higher the value should be. You can adjust it according to
the real environment.
3) Check Sudden Decrease of Sound Intensity Detection to detect the sound steep drop in the
surveillance scene. You can set the detection sensitivity [1-100] for sound steep drop.
Step 5 Set the arming schedule. Refer to 6.4.3 Configure Arming Schedule.
Step 6 Set the linkage actions. Refer to 6.4.4 Configure Alarm Linkage Action.
Step 7 Click Apply.
Digital Video Recorder User Manual
74