Triggering a PLC with an audio source

I'm working on a project in which I need to trigger a PLC with the start of an audio source. The PLC can only receive a 115V source as a trigger but the output jack of say an ipod is no where near that. What device can I use in order to provide a closed path of 115V to the input of the PLC when the audio source starts? Thanks..

Dave

have a look for audio (or voice) operated relay (or switch) e.g. AOR, VOX.

You can get sound/audio triggered relay kits and schematics all over the internet. The relay is used to trigger the PLC input by connecting the signalling voltage to it.

Thank you, that's exactly what I'm looking for.

Dave