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An Artificially Generated Multiple Object Auditory Space for Use where Vision is Impaired

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A display of spatial information using audible signals with binaural characteristics is described. The spatial information is gathered by a very wide band wide beam Continuous Transmission Frequency Modulated echo-location system, specially designed either for aiding blind persons or for use in fish location. The paper discusses the forms of the echo signals which are produced by different relative motions and shows that the range coding of pitch, being proportional to distance in stationary conditions, changes to a complex sound pattern uniquely related to the motion.

It is suggested that blind people have learned to use these sound patterns, which flow towards the left or the right as objects are passed, rather than the simple range code as described for a static situation. The binaural display resolution is considered under static and dynamic conditions.
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Document Type: Research Article

Publication date: September 1, 1976

More about this publication?
  • Acta Acustica united with Acustica, published together with the European Acoustics Association (EAA), is an international, peer-reviewed journal on acoustics. It publishes original articles on all subjects in the field of acoustics, such as general linear acoustics, nonlinear acoustics, macrosonics, flow acoustics, atmospheric sound, underwater sound, ultrasonics, physical acoustics, structural acoustics, noise control, active control, environmental noise, building acoustics, room acoustics, acoustic materials, acoustic signal processing, computational and numerical acoustics, hearing, audiology and psychoacoustics, speech, musical acoustics, electroacoustics, auditory quality of systems. It reports on original scientific research in acoustics and on engineering applications. The journal considers scientific papers, technical and applied papers, book reviews, short communications, doctoral thesis abstracts, etc. In irregular intervals also special issues and review articles are published.
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