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Figure 6-32 Audio
Step 2 Click next to Enable in Main Stream or Sub Stream.
For the camera with multiple channels, select the channel number.
Please carefully activate the audio acquisition function according to the actual
requirements of the application scenario.
Step 3 Congure audio parameters.
Table 6-11 Description of audio parameters
Parameter Description
Compression
You can select audio Encode Mode from PCM, G.711A, G.711Mu, G.
726, AAC, G.723.
The congured 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 accuracy the
restored signal will be. You can select audio Sampling Frequency from
8000, 16000, 32000, 48000, 64000.
Audio Input Type
You can select audio input type from:
●
LineIn : Requires external audio device.
●
Mic : Not require external audio device.
Noise Filter Enable this function, and the system auto lters ambient noise.
Microphone Volume Adjusts microphone volume.
Speaker Volume Adjusts speaker volume.
Step 4 Click Apply.
Operation Manual
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