Abstract: An audio imaging method and cognition interface for two-loudspeaker playback is intended for use with standard stereo recordings. The process applies new azimuth-based equalization and phase measurements specifically derived for stereo playback while faithfully interfacing with and eliciting human psychoacoustic localization responses via the Fletcher-Munson loudness effect. The process accurately recovers and reproduces three-dimensional sonic image locations inherently encoded in standard recordings so that a listener may accurately perceive the three-dimensional sound. Sound images are reproduced in at least the forward 180° free-field environment of the listener. The apparatus is designed to allow reproduction of atypical recordings made with closely-spaced microphones if desired.

Abstract: An audio imaging method and cognition interface for two-loudspeaker playback is intended for use with standard stereo recordings. The process applies new azimuth-based equalization and phase measurements specifically derived for stereo playback while faithfully interfacing with and eliciting human psychoacoustic localization responses via the Fletcher-Munson loudness effect. The process accurately recovers and reproduces three-dimensional sonic image locations inherently encoded in standard recordings so that a listener may accurately perceive the three-dimensional sound. Sound images are reproduced in at least the forward 180° free-field environment of the listener. The apparatus is designed to allow reproduction of atypical recordings made with closely-spaced microphones if desired.

Abstract: A wearable ballistic impact protection system detects impacts to a body. The system includes multiple sensors 10L, 10R for detecting vibration. The sensed vibrations are converted to electrical signals which are filtered. Electronic components 15 are provided to determine whether the filtered signal have frequency and amplitude characteristics of impact that cause injury to a body. Preferably, the sensors 10L, 10R are Piezo-electric film sensing elements. Information regarding the extent of the impact and injuries to the body may be transmitted to a remote location so that medics or other personnel may be informed to the extent of injuries to the body so that they may provide medical assistance.