The line input audio is connected to the yellow audio input phono (RCA) connector on the PCB. The line input can be taken from an audio device or DVR via a audio phono (RCA) lead. |
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The built in audio input, amplifier and speaker makes the VoiceOFF a very useful live loudspeaker. It has an industry standard RCA, phono style connector for an audio input. Whenever audio is input, the VoiceOFF plays that incoming audio. This could be from a DVR, a ‘Digital Video Recorder’ used for CCTV.
If the DVR’s audio output is then linked to the VoiceOFF, it will amplify this sound and play it back through its built in weatherproof speaker.
The VoiceOFF has intelligence built in to it as well. For example, if it is playing back a sound file from the built in Micro SD card, lets say it’s an in-store promotional audio file and the shop wants to play a live loudspeaker message through the VoiceOFF, such as announcing the store closes in 5 minutes, the MP3 file is stopped as soon as the VoiceOFF realises that audio is present at the phono input.
Similarly, in a security application, the VoiceOFF would start to play a pre-recorded warning message whenever it is triggered by a PIR detector that detects an intruder. If the person using CCTV to remotely monitor this site wanted to talk back to the area, the VoiceOFF switches off the warning MP3 file and plays the operator’s live message as soon as it detects audio coming from the DVR.
Note: If the VoiceOFF is playing a pre-recorded message from a alarm trigger then the audio line input interrupts the message, the message will not continue playing after the audio line input is no longer present (if the alarm trigger is removed).
If the alarm trigger is still active after the audio line input is no longer present then the message will continue playing.
