Dahua IPC-HFW2431T-ZS-S2, Operation Manual

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Figure 4-73 Audio
Step 2 Select the Enable check box in Main Stream or Sub Stream.
For the camera with multiple channels, select the channel number.
Please activate or deactivate the audio acquisition function based on the requirements of
the scene.
Step 3 Configure audio parameters.
Table 4-21 Description of audio parameters
Parameter Description
Encode Mode
You can select audio Encode Mode from G.711A, G.711Mu, AAC, G.
726.
The configured audio encode mode applies to both audio and
intercom. The default value is recommended.
Sampling Frequency
Sampling number per second. The higher the sampling frequency is,
the more the sample in a second will be, and the more accurate the
restored signal will be. You can select audio Sampling Frequency
from 8K, 16K, 32K, 48K, 64K.
Audioin Type
You can select audioin type from:
●
Linein : Requires external audio device.
●
Mic : Not require external audio device.
Noise Filter Enable this function, and the system auto filters ambient noise.
Microphone Volume Adjusts microphone volume.
Speaker Volume Adjusts speaker volume.
Step 4 Click Save.
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