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Audio recording can be performed:
- As audio and video synchro recording;
- By sound activation, i.e. when input audio signal power exceeds a certain value.
- Independently, by Operator command.
In synchro recording mode audio and video signals’ recording is initialized simultaneously (by Operator’s command or by alarm).
Audio and video signals’ recording is stopped simultaneously. Audio recording shutdown may be caused by:
- Video recording shutdown (by Operator command or by the end of alarm recording);
- Post-alarm recording shutdown (if the relevant camera is configured to perform post-alarm recording).
In synchro recording mode, audio recordings are combined with video recordings; they are stored in the videoserver archive.
In sound activated recording mode, audio recording is initialized at the moment, when signal power exceeds a preset (threshold) value. Audio signal recording is shutdown at the moment, when signal power becomes lower than a preset value, that has been previously exceeded.
An audio recording file, created in sound activated recording mode or by Operator command, includes an audio signal segment from the start till the end of the recording. In sound activated recording mode, as well as at recordind by Operator command, audio recording files are stored in a separate server archive (audio archive).
Note.
In the sound activated audio recording mode the disk space, reaching which the recordings are deleted for loop recording, is 100 MB.
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