HIKVISION DS-96128NI-F16, User Manual

Page: 128 / 232

User Manual of Network Video Recorder
127
1) Check the checkbox of Audio Input Exception to enable the audio loss detection function.
2) Check the checkbox of 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 the checkbox of 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.
6. Click Apply to activate the settings.
9.14 Sudden Scene Change Detection
Purpose:
Scene change detection function detects the change of surveillance environment affected by the external factors;
such as the intentional rotation of the camera, and some certain actions can be taken when the alarm is triggered.

Please refer to the Chapter 9.2 Face Detection for operating steps to configure the scene change detection.

The Sensitivity in the Rule Settings ranges from 1 to 100, and the higher the value is, the more easily the
change of scene can trigger the alarm.
9.15 Defocus Detection
Purpose:
The image blur caused by defocus of the lens can be detected, and some certain actions can be taken when the
alarm is triggered.

Please refer to the Chapter 9.2 Face Detection for operating steps to configure the defocus detection.

The Sensitivity in the Rule Settings ranges from 1 to 100, and the higher the value is, the more easily the
defocus image can trigger the alarm.
9.16 PIR Alarm
Purpose:
A PIR (Passive Infrared) alarm is triggered when an intruder moves within the detector's field of view. The heat
energy dissipated by a person, or any other warm blooded creature such as dogs, cats, etc., can be detected.
Steps:
1. Enter the VCA settings interface.
Menu> Camera> VCA
2. Select the camera to configure the VCA.