The sound activated audio recording mode is the mode, in which audio signal recording starts at the moment, when signal power exceeds a preset level and is shutdown at the moment, when signal power becomes lower than the preset level that has been previously exceeded.
To set up the sound activated recording, Axxon PSIM™ software uses the settings:
- Level - When audio signal power exceeds a threshold value (Level setting) during a preset interval (Delay), audio signal recording starts automatically (alarm’s registration).
- The Delay setting defines the time interval, during which audio signal is prerecorded after the end of the alarm.
Sound activated recording is adjusted separately and independently for any microphone. It is recommended to select the optimal settings by trial and error to avoid malfunction.
By default, sound activated audio signal recording is disabled.
Enabling and setting up the sound activated recording option for a selected microphone is done in the following way:
- Select the disk(s) to store audio recordings in the sound activated mode (see. Selecting the disks for audio archive storage).
- Set the Audio player object to operate with the selected microphones.
- Go to the Microphone system object settings panel.
- Set the slider Audio trigger to the position, corresponding to the required level of video signal. The current level in conventional units is displayed in the field on the right of the slider.

- Set the Audio trigger slider to the position, corresponding to the required delay time of audio signal after the end of alarm. The current delay time in sec is displayed in the field on the right of the slider.
- Click the Apply button to save all the changes.
- With the help of Audio player object check if the sound activated recording is initialized, when the sound signal of the required volume is fed to the microphone. If not, reduce the value of Level by moving the Level slider some points to the left (see 4-5 steps).
- With the help of Audio player object check, if the sound activated recording is initialized, when the sound signal of lower volume, is fed to the microphone. If yes, move the Level slider some points to the right (see 4-5 steps) to increase the setting value.
- Repeat steps 7-9. If the sound activated recording is properly set up, complete the set up procedure.
Setup of sound activated recording of audio signal is completed.