392
Figure 5-87
5.10.3.6 Audio Detect (Optional)
System can generate an alarm once it detect the audio input is abnormal or audio volume changes.
From main menu->Setup->Event->Audio detect, you can see an interface shown as in Figure 5-88.
Input abnormal: Check the box here, system can generate an alarm once the audio input is
abnormal.
Intensity change: Check the box here, system can generate an alarm once the audio volume
becomes strong.
Sensitivity: It refers to the audio recognition sensitivity. The higher the value is , the higher the
sensitivity is.
Threshold: It is to set intensity change threshold. The smaller the value is, the higher the sensitivity
is.
For detailed setups, please refer to chapter 5.10.3.1.1 motion detect for detailed information.
Figure 5-88
Summary of Contents for NVR1A-4P Series
Page 1: ...Dahua Network Video Recorder User s Manual V 4 3 0 ...
Page 142: ...128 Figure 3 11 3 6 12 NVR42V 8P Series Please refer to Figure 3 12 for connection sample ...
Page 143: ...129 Figure 3 12 ...
Page 157: ...143 Figure 4 15 Step 2 Click device display edit interface See Figure 4 16 ...
Page 220: ...206 Figure 4 93 Figure 4 94 ...
Page 240: ...226 Figure 4 110 Figure 4 111 Figure 4 112 ...
Page 251: ...237 Figure 4 123 Figure 4 124 ...
Page 253: ...239 Figure 4 126 Click draw button to draw the zone See Figure 4 127 ...
Page 257: ...243 Figure 4 130 Click Draw button to draw a zone See Figure 4 131 Figure 4 131 ...
Page 262: ...248 Figure 4 136 Click draw button to draw the zone See Figure 4 137 ...
Page 275: ...261 Figure 4 148 Figure 4 149 ...
Page 276: ...262 Figure 4 150 Figure 4 151 ...
Page 387: ...373 Figure 5 60 Figure 5 61 ...
Page 388: ...374 Figure 5 62 Figure 5 63 ...
Page 412: ...398 Figure 5 96 Figure 5 97 ...
