Installation Manual

the smoothing, the higher quality of the stream, though it may appear not fluent.
4. Click to save the settings.
6.2.2 Configuring Audio Settings
Note: Audio Settings may not be supported by certain camera models.
Steps:
1. Enter the Audio settings interface
Configuration > Video/Audio > Audio
Figure 6-24 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: Slide the bar to turn up/down the volume.
 Audio Output: Close, LineOut and Built-in Speaker are selectable. If Close is selected,
related audio playing function is disabled, for example the audible warning of linkage
method. Select LineOut for connected external speaker and Built-in Speaker for the
built-in speaker the device has.
 Output Volume: Slide the bar to turn up/down the volume.
Note:
Audio Output, LineOut, and Output Volume are only supported on certain cameras.
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: