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A prosthetic aid for a developing blind child.

J T Boys, E R Strelow, G R Clark

    Ultrasonics
    |January 1, 1979
    PubMed
    Summary
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    This study introduces an experimental ultrasonic sonar sensory aid for blind children. Its novel design offers versatility and field adjustability for diverse environments.

    Area of Science:

    • Biomedical Engineering
    • Assistive Technology

    Background:

    • Blind children require effective sensory aids to navigate and interact with their environment.
    • Existing sensory aids may lack versatility or ease of field adjustment.

    Purpose of the Study:

    • To describe an experimental ultrasonic sonar sensory aid designed for blind children.
    • To highlight novel signal processing techniques enabling field parameter changes.
    • To detail features enhancing environmental versatility.

    Main Methods:

    • Development of an experimental ultrasonic sonar system.
    • Implementation of novel signal processing techniques.
    • Integration of a variable range code and automatic level control.
    • Detailed description of ultrasonic transducers used.

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    Main Results:

    • The aid is relatively simple to construct.
    • Many device parameters can be modified in the field.
    • The variable range code and automatic level control enhance versatility.
    • The device is suitable for a wide variety of environments.

    Conclusions:

    • The described ultrasonic sonar offers a promising sensory aid for blind children.
    • Its design facilitates field customization and broad environmental applicability.
    • Novel signal processing contributes to its simplicity and versatility.