Setting up the audio trigger recording

The audio trigger recording is a mode in which audio recording starts at the moment when the volume of the audio signal exceeds a preset level and ends at the moment when the volume of the audio signal becomes lower than the preset level exceeded earlier.

To set up the audio trigger recording in Axxon PSIM, you can use the following parameters:

1. Audio trigger level determines the threshold level of audio signal power above which audio recording (alarm event registration) is automatically started.
2. Audio trigger delay determines the time during which the audio signal is post-recorded after the end of an alarm event.

You must configure the audio trigger recording separately for each microphone. We recommend selecting the optimal values of the audio trigger recording experimentally to avoid false positives.

By default, the audio trigger recording is disabled.

To configure the audio trigger recording, do the following:

1. Select the disk(s) to store audio trigger recordings (see Selecting the disks for audio archive storage).
2. Configure the Audio player object to operate with the microphones, the audio signal from which must be recorded by audio trigger (see Configuring audio signals playback using the Audio player object).
3. Go to the settings panel of the Microphone system object.
   
4. Move the Audio trigger level slider to the position corresponding to the required level of audio threshold power. The current threshold level in conventional units is displayed in the field to the right of the slider.
5. Move the Audio trigger delay slider to the position corresponding to the required audio post-recording time after the end of an alarm event. The current audio post-recording time in seconds is displayed in the field to the right of the slider.
6. Click the Apply button to save the changes.
7. Use the Audio player object to check if the audio trigger recording is initialized when an audio signal of the required volume is fed to the microphone. If recording isn't initialized, reduce the value of the Audio trigger level parameter by moving the slider a few divisions to the left (see step 4).
8. Use the Audio player object to check if the audio trigger recording is initialized when an audio signal with a volume level lower than the required one is fed to the microphone. If recording is initialized, increase the value of the Audio trigger level parameter by moving the slider a few divisions to the right (see step 4).
9. Repeat steps 7-8. If the audio trigger recording works correctly, complete the setting procedure.

Setting up the audio trigger recording is complete.