Auditory perception and its relation to ultrasonic blind guidance aids
- 1 October 1962
- journal article
- Published by Institution of Engineering and Technology (IET) in Journal of the British Institution of Radio Engineers
- Vol. 24 (4) , 309-317
- https://doi.org/10.1049/jbire.1962.0104
Abstract
Experiments have been conducted to determine the optimum form of auditory presentation of signals received with ultrasonic echo-location guidance aids. Pulses of tone and continuous-wave frequency-modulated transmission were used, and there was no doubt that the latter form of transmission produced the most suitable auditory signals.A portable guidance aid was made, using frequency-modulation echo-location principles, and the results justify tests with a small group of blind people.Keywords
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