137Figure 3-1323.14.7 Audio DetectSystem can generate an alarm once it detect the audio input is abnormal or audio volume changes.From main menu->Setting->Event->Audio detect, user may see an interface shown as in Figure 3-133. Input abnormal: Check the box here, system can generate an alarm once the audio input isabnormal. Intensity change: Check the box here, system can generate an alarm once the audio volumebecomes strong. Sensitivity: It refers to the audio recognition sensitivity. The higher the value is, the higher thesensitivity is. Threshold: It is to set intensity change threshold. The smaller the value is, the higher the sensitivityis. Log: Check the box here, system can record audio detect alarm log.User may refer to the chapter 3.14.1.1 to set other parameters.
