User Manual

Network Video Recorder User Manual
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Figure 5-10 Audio Exception Detection
4. Optional: Check Save VCA Picture to save the captured audio exception detection pictures.
5. Set the detection rules:
1) Select Exception Detection.
2) Check Audio Loss Exception,Sudden Increase of Sound Intensity Detection,and/or Sudden
Decrease of Sound Intensity Detection.
Audio Loss Exception
Detects a steep sound rise in the surveillance scene. You can set the detection sensitivity
and threshold for steep sound rise by configuring its Sensitivity and Sound Intensity
Threshold
Sensitivity
The smaller the value, the more severe the change must be to trigger the detection. Range
[1-100].
Sound Intensity Threshold
It can filter the sound in the environment. The louder the environment sound, the higher
the value should be. Adjust it according to the environment. Range [1-100].
Sudden Decrease of Sound Intensity Detection
Detects a steep sound drop in the surveillance scene. You need set the detection sensitivity
[1-100].
6. Set the arming schedule. Refer to Configure Arming Schedule.
7. Set the linkage actions. Refer to Configure Linkage Actions.
8. Click Apply.
5.2.9 Defocus Detection
Image blur caused by lens defocus can be detected.
Steps
1. Go to Smart Analysis → Smart Event Settings → Other Events.