Blind wayfinding with physically-based liquid sounds

被引：17

作者：

Spagnol, Simone ^{[1
,2
]}

Hoffmann, Rebekka ^{[2
,3
]}

Herrera Martínez, Marcelo ^{[2
,4
]}

Unnthorsson, Runar ^{[2
]}

机构：

[1] Department of Information Engineering, University of Padova, Via Gradenigo 6B, Padova,35131, Italy

[2] Faculty of Industrial Engineering, Mechanical Engineering and Computer Science, University of Iceland, Dunhagi 5, Reykjavík,107, Iceland

[3] Faculty of Psychology, University of Iceland, Sæmundargata 10, Reykjavík,101, Iceland

[4] Faculty of Engineering, University of San Buenaventura, Carrera 8H #172–20, Bogotá, Colombia

来源：

International Journal of Human Computer Studies | 2018年 / 115卷

基金：

欧盟地平线“2020”;

关键词：

Curricula;

D O I：

10.1016/j.ijhcs.2018.02.002

中图分类号：

学科分类号：

摘要：

Translating visual representations of real environments into auditory feedback is one of the key challenges in the design of an electronic travel aid for visually impaired persons. Although the solutions currently available in the literature can lead to effective sensory substitution, high commitment to an extensive training program involving repetitive sonic patterns is typically required, undermining their use in everyday life. The current study explores a novel sensory substitution algorithm that extracts information from raw depth maps and continuously converts it into parameters of a naturally sounding, physically based liquid sound model describing a population of bubbles. This approach is tested in a simplified wayfinding experiment with 14 blindfolded sighted participants and compared against the most popular sensory substitution algorithm available in the literature – the vOICe (Meijer, 1992) – following a short-time training program. The results indicate a superior performance of the proposed sensory substitution algorithm in terms of navigation accuracy, intuitiveness and pleasantness of the delivered sounds compared to the vOICe algorithm. These results should be applied to the visually impaired population with caution. © 2018 Elsevier Ltd

引用

页码：9 / 19