Operation Manual
41
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
.
6.2.4.2 Setting Alarm Tone
You can record or upload alarm audio file. The audio file will be played when the alarm is triggered.
Procedure
Step 1
Select >
Camera
>
Audio Tone
.
Figure 6-32 Audio tone
Step 2
Click
Add
.
Step 3
Configure the audio file.
●
Select
Record
, enter the audio name in the input box, and then click
Record
.
●
Select
Upload
, click
Browse
to select the audio file to be uploaded, and then click
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