TY - JOUR
AU - Shingledecker, C. A.
AB - The Nottingham Obstacle Director (NOD) is an ultrasonic handheld aid designed to help visually handicapped people detect obstacles as they travel. NOD emits pulses of high-frequency sound up to 7½ feet ahead of the user. The pocket-sized secondary device requires little training and is intended to be used with a primary aid (long cane, dog guide). This article describes the development of the NOD and the results of two evaluation studies that tested the efficacy of the device.
TI - The Nottingham Obstacle Detector: Development and Evaluation
JF - Journal of Visual Impairment & Blindness
DO - 10.1177/0145482X8107500503
DA - 1981-05-01
UR - https://www.deepdyve.com/lp/sage/the-nottingham-obstacle-detector-development-and-evaluation-c8DEIoag0U
SP - 203
EP - 209
VL - 75
IS - 5
DP - DeepDyve
ER -