HIKVISION DS-2DF7C425IXR-AEL(T5), User Manual, Page: 58 / 122

Audio Input
Select MicIn for the built-in microphone, and LineIn for external audio pick-up device.
Note
MicIn is only supported by certain models.
Input volume
Adjust the volume of the audio input.
6.2.2 Environmental Noise Filter
Set it as OFF or ON. When the function is enabled, the noise in the environment can be filtered to
some extent.
6.3 Two-way Audio
It is used to realize the two-way audio function between the monitoring center and the target in
the monitoring screen.
Before You Start
●
Make sure the audio input device (pick-up or microphone) and audio output device (speaker)
connected to the device is working properly. Refer to specifications of audio input and output
devices for device connection.
●
If the device has built-in microphone and speaker, two-way audio function can be enabled
directly.
Steps
1. Click Live View.
2. Click on the toolbar to enable two-way audio function of the camera.
3. Click , disable the two-way audio function.
6.4 ROI
ROI (Region of Interest) encoding helps to discriminate the ROI and background information in
video compression. The technology assigns more encoding resource to the region of interest, thus
to increase the quality of the ROI whereas the background information is less focused.
6.4.1 Set ROI
ROI (Region of Interest) encoding helps to assign more encoding resource to the region of interest,
thus to increase the quality of the ROI whereas the background information is less focused.
Network Speed Dome User Manual
46