Echolocation as a means for people with visual impairment (PVI) to acquire spatial knowledge of virtual space

R Andrade, J Waycott, S Baker, F Vetere - ACM Transactions on …, 2021 - dl.acm.org
In virtual environments, spatial information is communicated visually. This prevents people
with visual impairment (PVI) from accessing such spaces. In this article, we investigate …

LIDAR assist spatial sensing for the visually impaired and performance analysis

C Ton, A Omar, V Szedenko, VH Tran… - … on Neural Systems …, 2018 - ieeexplore.ieee.org
Echolocation enables people with impaired or no vision to comprehend the surrounding
spatial information through the reflected sound. However, this technique often requires …

[HTML][HTML] Navigation and perception of spatial layout in virtual echo-acoustic space

C Dodsworth, LJ Norman, L Thaler - Cognition, 2020 - Elsevier
Successful navigation involves finding the way, planning routes, and avoiding collisions.
Whilst previous research has shown that people can navigate using non-visual cues, it is not …

Proposed ontology for cognitive radar systems

C Horne, M Ritchie, H Griffiths - IET Radar, Sonar & Navigation, 2018 - Wiley Online Library
Cognitive radar is a rapidly developing area of research with many opportunities for
innovation. A significant obstacle to development in this discipline is the absence of a …

[HTML][HTML] Human click-based echolocation of distance: Superfine acuity and dynamic clicking behaviour

L Thaler, H De Vos, D Kish, M Antoniou… - Journal of the …, 2019 - Springer
Some people who are blind have trained themselves in echolocation using mouth clicks.
Here, we provide the first report of psychophysical and clicking data during echolocation of …

The flexible action system: Click-based echolocation may replace certain visual functionality for adaptive walking.

L Thaler, X Zhang, M Antoniou, DC Kish… - Journal of Experimental …, 2020 - psycnet.apa.org
People use sensory, in particular visual, information to guide actions such as walking
around obstacles, grasping or reaching. However, it is presently unclear how malleable the …

Human echolocators adjust loudness and number of clicks for detection of reflectors at various azimuth angles

L Thaler, R De Vos, D Kish… - … of the Royal …, 2018 - royalsocietypublishing.org
In bats it has been shown that they adjust their emissions to situational demands. Here we
report similar findings for human echolocation. We asked eight blind expert echolocators to …

A Participatory Design Approach to Creating Echolocation-Enabled Virtual Environments

R Andrade, S Baker, J Waycott, F Vetere - ACM Transactions on …, 2022 - dl.acm.org
As virtual environments—in the form of videogames and augmented and virtual reality
experiences—become more popular, it is important to ensure that they are accessible to all …

[HTML][HTML] Auditory orientation and distance estimation of sighted humans using virtual echolocation with artificial and self-generated sounds

H Steffens, M Schutte, SD Ewert - JASA Express Letters, 2022 - pubs.aip.org
Active echolocation of sighted humans using predefined synthetic and self-emitted sounds,
as habitually used by blind individuals, was investigated. Using virtual acoustics, distance …

[HTML][HTML] Effects of type of emission and masking sound, and their spatial correspondence, on blind and sighted people's ability to echolocate

L Thaler, JG Castillo-Serrano, D Kish, LJ Norman - Neuropsychologia, 2024 - Elsevier
Ambient sound can mask acoustic signals. The current study addressed how echolocation in
people is affected by masking sound, and the role played by type of sound and spatial (ie …