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Step 1
Select "Setup > Camera > Audio" and the system will display the interface of "Audio", which is shown in
Figure 5-24
Step 2
It is to set audio parameters, please refer to Table 5-13 for more details.
Parameter
Note
Channel 1/Channel 2
It can enable audio only when video is enabled.
It will enable audio output channel 1 or audio output channel 2 after
selecting "Channel 1" or "Channel 2" of main stream or sub stream
area.
Encode Mode
It is to encode mode of audio, including G.711A, G.711Mu, G.726,
AAC, MPEG2-Layer2, G.722.1 and G.729.
The encode mode which has been set is valid to both audio and talk
at the same time.
Sampling Frequency
Audio sampling frequency, including 8k, 16k, 32k, 48k and 64k.