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Figure 6-21 Audio Settings
2. Configure the following settings.
Audio Encoding: G.722.1, G.711ulaw, G.711alaw, MP2L2, G.726 and PCM are selectable.
Audio Input: When an intercom is connected to the camera, you need to set this option to
LineIn. When a microphone is connected to the camera, you need to set this option to MicIn.
Audio Stream Bitrate: When the Audio Encoding is selected as MP2L2, you can configure the
Audio Stream Bitrate in the dropdown list. The greater the value is, the better the audio
quality will be.
Sampling Rate: When the Audio Encoding is selected as MP2L2 or PCM, you can configure the
Sampling Rate in the dropdown list. The greater the value is, the better the audio quality will
be.
Input Volume: Slid the bar to turn up/down the volume. The value ranges from 0 to 100.
Environmental Noise Filter: Select ON or OFF in the dropdown list to enable or disable the
function. It’s recommended to enable the function when sampling rate is lower than 32 kHz.
3. Click to save the settings.
6.2.3 Configuring ROI Settings
Purpose:
ROI (Region of Interest) encoding is used to enhance the quality of images which are specified in
advance. There are two different ROI methods: Fixed Region and Dynamic Region. When Fixed
Region is enabled, image quality of ROI area will be enhanced and image quality of other areas
will be reduced. When Dynamic Region is enabled, image quality of tracking target will be
enhanced.
ROI function varies depending on different camera models.
Enter the ROI settings interface:
Configuration >Video/Audio > ROI
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