User's Manual

Table Of Contents
Operation Manual
32
Figure 6-24 ROI
Step 2 Click next to
Enable
, draw an area on the image, and then configure the image
quality of ROI.
You can draw 4 area boxes at most.
The higher the image quality value is, the better the quality will be.
Click
Clear
to delete all the area boxes; select one box, and then click to
delete it.
Step 3 Click
Apply
.
6.2.3 Setting Audio Parameters
This section introduces audio parameters, including encode mode, sampling frequency, audio
in type, and noise filter.
Step 1 Select >
Camera
>
Audio
.
Figure 6-25 Audio
Step 2 Click next to
Enable
in
Main Stream
or
Sub Stream
.
For the camera with multiple channels, select the channel number.
Please carefully activate the audio acquisition function according to the actual
requirements of the application scenario.