Chopper & LM
That certainly rings bells. BAeS approached MoD(PE) in 1996 for advice on the (EFA) helmet. I remember it well - at the Hilton in Bristol. MoD (DERA Farnborough) were years ahead of anyone else. They were interested in the Digital ANR development that had commenced, after successful introduction of the analog system in a Mk4A, and also the 3D audio system trialled in Lynx. The visor/display sounds an awful lot like that trialled by the Army in Cyprus in about 99. The appliance of existing science!