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VIVOTEK
User's Manual - 101
Applications > Audio detection
Advanced Mode
Audio detection, along with video motion detection, is applicable in the following scenarios:
1� Detection of activities not covered by camea view, e�g�, a loud input by gunshots or breaking
a door or window
2� A usually noisy environment, such as a factory, suddently becomes quiet due to a breakdown
of machines�
3� A PTZ camera can be directed to turn to a preset point by the occurrence of audio events�
4� Dark environments where video motion detection may not function well�
The red circles in the diagram above indicate where the audio alarms can be triggered when
breaching or falling below the preset threshold�
How to congure Audio detection:
1� Once the Audio detection window is opened, the current sound input will be interactively
indicated by a uctuating yellow wave diagram.
2� Use a mouse click to drag the Alarm level tab to a preferred location on the slide bar
3. Select the "Enable audio detection" checkbox and click Save to enable the feature�
NOTE:
1. Note that the numbers (0~100) on the side of wave diagram do not represent decibel (dB).
A sound intensity level has already been mapped to preset values� You can, however, use
the real-world inputs at your installation site as they are shown on the wave diagram to
congure an alarm level.
2. To congure this feature, you must not mute the audio in Conguration -> Media -> Audio.
The default of the camera can be muted due to the lack of an internal microphone� An
external microphone is separately provided by users�
3� Refer to page 81 for Audio input adjustment such as Audio input gain� If audio settings
have been tuned, you should recongure the audio alarm setting.
101


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