Accession Number : ADA268181


Title :   A Virtual Acoustic Orientation Instrument


Descriptive Note : Final rept. Nov 1991-Nov 1992


Corporate Author : KRUG LIFE SCIENCES SAN ANTONIO TX SAN ANTONIO DIV


Personal Author(s) : Teas, Don C


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a268181.pdf


Report Date : Jan 1993


Pagination or Media Count : 45


Abstract : Virtual instrumentation developed to create acoustic stimuli for use as orientation signals and the rationale for selecting these target signals is described. A commercially available computer-assisted software engineered programming system, LabVIEW, was used to develop the acoustic signals and the manner of their presentation. Two different acoustic signals are presented. One sound seems to change pitch without limit, and the other is a narrow band-pass noise. The pitch, loudness, and lateral position of the signals are controlled by different functions. Listeners can control the variations in pitch and lateralization and also the rate at which these features change. Programs to generate the signals with sinusoids or with noise bands are described. LabVIEW representations of the programs are included with text descriptions.... Acoustic, Auditory, Auditory lateralization, Acoustic orientation, Flight instruments, Spatial disorientation.


Descriptors :   *NEURAL NETS , *FLIGHT INSTRUMENTS , *ACOUSTIC SIGNALS , *AUDITORY SIGNALS , *AUDITORY PERCEPTION , *SPACE PERCEPTION , CONTROL , COMPUTERS , COMPUTER PROGRAMMING , ORIENTATION(DIRECTION) , TARGETS , FLIGHT , SOUND , INSTRUMENTATION , VISUAL PERCEPTION , NOISE , STIMULI , TARGET DETECTION , EAR , LOUDNESS


Subject Categories : Flight Control and Instrumentation
      Anatomy and Physiology
      Cybernetics


Distribution Statement : APPROVED FOR PUBLIC RELEASE