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| Similar to NavChair approach, UM developed
"NavBelt" for the blind. |
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| Uses UM's obstacle avoidance: |
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| instead of issuing steering signals to the robot
controller, NavBelt generates acoustic cues conveyed
to the user via headphones. |
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| Required hundreds of hours of training before
users could respond to the acoustic cues in time, even
at slow walking speeds. |
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