User's Manual

Table Of Contents
81
when the system detects abnormal sound input.
Intensity change: Click to enable
Intensity Change
and then configure
Sensitivity
and
Threshold
. The alarm is triggered when the system detects that the
sound intensity exceeds the configured threshold.
The alarm is easier to be triggered 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 is detected. Adjust sensitivity and threshold according to the
waveform.
Figure 4-76 Audio detection
Step 4 Set arming periods and alarm linkage action. For details, see "4.6.1.2 Alarm Linkage".
If the exiting schedules cannot meet the scene requirement, you can click
Add Schedule
to add a new schedule. For details, see "4.6.1.2.1 Adding Schedule".
Anti-dither: After the
Anti-dither
time is set, the system only records one motion detection
event in the period.
Step 5 Click
Apply
.
4.7 Storage
Display the information of the local SD card. You can set it as read only or read & write; you can also