Acoustics pattern code to represent the contour of any visual image for people who are blind. Martinez Y Cardenas, Jose Rodolfo ; Menchaca Garcia, Felipe Rolando ; Berron Lara, Virginia Abstract Publication: Acoustical Society of America Journal Pub Date: 2010 DOI: 10.1121/1.3507990 Bibcode: 2010ASAJ..128.2281M