Stereo Missile Warning

In this day and age of shoulder launched SAMs, combat aircraft now carry missile warning electronics. One version of same, when it sees an incoming missile, gets on the aircraft intercom and cries out "Missile! Missile! Missile!". The Swedes have improved on that.
Human ears are very good at telling the direction of a sound. The Swedish system plays with the timing and phase of the sound going to the pilot's left and right earphones. This gives the sound a direction left/right and up/down. Naturally the system makes the sound come from the direction of the incoming missile. The pilot instantly knows which way to turn to evade.
Clever idea.