I shall be brief on this bizarre situation. It was an utterly stupid and absurd decision to locate the bunk area so far away from the flight deck and amongst hundreds of crazed, tired, cramped and bladder-desparate stampeding economy class passengers. But having done such a ludicrous, commercially expedient action, all that is needed is a simple continuous tape or CD system which plays, at a volume level chosen by the pilots, the sleep-inducing sound of a couple of Pratt and Whitney R-1830 radials set at 2,050 rpm. It certainly used to send me to sleep over the tropical oceans surrounding Papua New Guinea...and I was supposed to be flying the old C-47 with up to 40 Highland warriors chanting their tribal songs just behind me! If it worked under those conditions, it should certainly send our current A-380 pilots off into a deep untroubled slumber.....cheap too; which should be most appealing to the bean-counters so concerned with the First-Class VIPs.
"Happiness is a pair of sodding great Pratt & Whitneys...bliss is a pair on each wing!"