Echolocation reconsidered: Using spatial variations in the ambient sound field to guide locomotion

Author(s): Wall, R. S., Eaton, S. B., Ebinger, K. A., SnookHill, M. M., Guth, D. A., Yang, X. F.

Journal/Book: J Visual Impair Blind. 1998; 92: J Visual Impairment Blindness, 11 Penn Plaza, Suite 300, New York, NY 10001. Amer Foundation Blind. 615-632.

Abstract: This article presents an acoustical model and evidence from four experiments that children with visual impairments use the buildup of low-frequency sound along walls to guide locomotion. The model differs from the concept of echolocation by emphasizing sound that is ambient, rather than self-produced, and of low, rather than high, frequency.

Note: Article Ashmead DH, Vanderbilt Univ, Dept Hearing & Speech Sci, Med Ctr, 221 Kirkland Hall, Nashville,TN 37232 USA

Keyword(s): BLIND

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