Dahua Technology DH-IPC-EBW81242N-AS-S2 12MP Outdoor Network Panoramic Fisheye Camera with Night Vision - Manual (Page 48)

Operation Manual
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Figure 6-29 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 Configure 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 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 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 filters ambient noise.
Microphone Volume Adjusts microphone volume.
Speaker Volume Adjusts speaker volume.
Step 4 Click Apply .
6.2.3.2 Setting Alarm Tone
You can record or upload alarm audio file. The audio file will be played when the alarm is triggered.
Step 1
Select > Camera > Audio Tone .