This feature allows you to use i-Sound as a digital voice recorder. Recorder constantly listening for sound and when the volume reaches a predetermined dB level it starts recording. Reaction time determines how many seconds it will continue recording after a drop in the level.
Voice Activated System support two modes. First mode will create single audio file and just skip silent pauses. It could be used for voice recording. Second mode will create new audio file every time. May be useful to split separate songs by silent pauses in live stream.
As the recording continues for a few seconds after the fall of the audio signal level, at the end of each recording will be present few seconds of silence. To avoid this, you can use "Cut off silent part" feature. To ignore the false detections caused by the clicks and background noises you can specify the minimum detection time.