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37
Figure 5-5 Video tampering
Step 3 Configure arming periods and alarm linkage action. For details, see "5.1.1 Alarm Linkage"
and "5.1.2 Setting Period".
Step 4 Click
Save
.
5.1.4 Configuring Audio Detection
When vague voice, tone change, or sound intensity rapid change is detected, the Camera performs
alarm linkage.
Step 1 Select
Setting
>
Event
>
Audio Detection
.
Step 2 Configure parameters of audio detection.
●
Input abnormal: Select the
Enable Input Abnormal
checkbox, and the alarm is
triggered when the system detects abnormal sound input.
●
Intensity change: Select the
Enable Intensity Change
checkbox and then set
Sensitivity
and
Threshold
. The alarm is triggered when the system detects that the
sound intensity exceeds the configured threshold.
◇
It is easier to trigger the alarm with higher sensitivity or smaller threshold. Set a high
threshold for noisy environment.
◇
The red line in the waveform indicates audio detection is triggered, and the green
one indicates no audio detection. Adjust sensitivity and threshold according to the
waveform.
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