I posted this originally in the Audio section but thought I might get more of a response if I also posted it here.

I have a 2012 Multivan Comfortline with the standard sound system. On Page 204 of the generic book which comes with the vehicle it talks about a Digital Voice Enhancement system which when fitted and when activated picks up the voices of passengers and driver on the nearest microphone and transmits it through the sound system without picking up background noise.

Obviously my vehicle does not have this system, but it would be a particularly useful feature as the vehicle is modified to take my wife's wheelchair, so she is sat at the back of the vehicle and conversation can often be difficult.

I was wondering if anybody had seen this feature in action and whether it could be retrofitted.

Thanks