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Applications > Audio detection
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 configure Audio detection:
1� Once the Audio detection window is opened, the current sound input will be interactively
indicated by a fluctuating 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
configure an alarm level.
2. To configure this feature, you must not mute the audio in Configuration -> 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 reconfigure the audio alarm setting.
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VIVOTEK
User's Manual - 101
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