Hello Mark,
That's interesting about the child's voice/whisper. I worked in electronic
warfare and communications while in Air Force (during the short-lived Gulf War
era), but never heard anything aside from (female) voice warning systems.
Perhaps child's voice too subliminal (depend, of course,
Eric:
When I first started experimenting with "localized" sound -- intended for
an acoustic interface to smart phones (and also before I "met" Ambisonics)
-- I was working with a fellow named Bo Gehring, who might be recalled for
his early contributions to video-game sonics.
He had once w