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5.4.3.2 Audio Detection
This menu allows the user to modify audio detection settings. Below is a screenshot of the Audio Detect screen:
Below is an explanation of the fields on the Audio Detect tab:
Enable: This checkbox enables an audio detection alarm for the camera.
Enable Intensity Change: This checkbox enables intensity change for the camera audio.
o Sensitivity is the amount of change required to increase the audio detected by a percentage. The
lower the sensitivity, the more audio variance is required to trigger an alarm.
o Threshold is the level that the detected audio needs to reach in order to trigger an alarm. The lower
the threshold, the more likely that audio will trigger an alarm.
Working Period: Clicking this button opens a weekly schedule that can be used to set times.
o Click and drag to set audio tampering for certain days of the week. Also, periods of audio detection
can be set for each day and enabled using the period settings on the bottom half of the screen. There
are a total of 6 periods that can be set.
Anti-Dither: This field allows the user to set the anti-dither time. The values in this field can range from 5 to
600 seconds. This time value controls how long the alarm signal lasts. Based on audio detection, a buzzer can
go off, a tour can begin, PTZ can be activated, a snapshot can be taken, or the camera can begin recording.
o For example, if the anti-dither time is set to 10 seconds, each alarm may last 10 seconds if the local
alarm is activated. During the process, if the system detects another local alarm signal at the fifth
second, the buzzer, tour, PTZ activation, snapshot, record channel functions will begin another 10
seconds while the screen prompt, alarm upload, email will not be activated again. After 10 seconds, if
system detects another alarm signal, it can generate a new alarm since the anti-dither time has
expired.
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