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, on level), evoked emotions that could compromise mission, gender bias (a few female pilots), or not as effective for pilots who didn't have family of their own. But conceptually, it's a very interesting way of being heard through the noise. I had worked on an infant screening device for Etymotic Research (IL) while a student at UA (Tucson). Briefly, the stimulus was to be a recording of the infant's own mother (voice chips used to record; compander chip needed to ensure uniform record level). Other noises and women's voices weren't effective, or infant habituated very quickly to loud sound (Mayo clinic once used what was referred to as "spook-a-baby" to elicit response to sound, but infant not likely to turn eyes or head after one "blast"). Mother's own voice provided a reliable and repeatable stimulus. At that time, brainstem evoked auditory response (BAER) was the screening and objective test measure for infant hearing in hospitals, but now otoacoustic emissions are widely used because its quick and inexpensive. The screening tool was designed to be used at home to detect loss during the important language-acquisition years (6 - 18 mos or thereabout -- I'm not a speech-language person). Best, Eric C.
________________________________ 2. Re: Guns and Odor (newme...@aol.com) 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 worked on a project for the US Air Force that was trying to solve the problem of getting a pilot's attention to inform them that a heat-seeking missile was about to fly up their tailpipe. The solution, which I don't know if it was ever implemented, involved having a child's voice "whisper" through the headphones (in what is a *very* noisy environment), "Daddy, pull up!" Both the child, the whisper and the "daddy" were important, psychoacoustically speaking, as I recall. Mark Stahlman Brooklyn NY -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://mail.music.vt.edu/mailman/private/sursound/attachments/20130412/22d9b8a3/attachment.html> _______________________________________________ Sursound mailing list Sursound@music.vt.edu https://mail.music.vt.edu/mailman/listinfo/sursound
