Auditory and tactile frequency mapping for visual distance perception: A step forward in sensory substitution and augmentation
Pingping Jiang, Jonathan Rossiter, Christopher Kent
TL;DR
This study explores how sound and touch can represent visual distance, aiming to improve sensory substitution devices for the visually impaired.
Contribution
The paper introduces bidirectional cross-modal mappings between visual distance and non-visual frequencies for intuitive sensory substitution.
Findings
A monotonic negative correlation was the most common pattern (59%) between frequency and visual distance.
24% of participants showed a positive correlation between frequency and visual distance.
Common patterns suggest bidirectional mappings between visual distance and auditory/tactile frequencies.
Abstract
Vision is crucial for daily tasks and interacting with the environment, but visual impairment can hinder these activities. Many sensory substitution products and studies prioritize providing abundant and accurate information, yet often overlook the inherent relationship between different modalities, potentially preventing users from receiving information intuitively. This study investigated the representation of visual distance using auditory and vibrotactile frequency through a series of psychological cross-modal matching experiments. By establishing mapping functions between auditory/vibrotactile frequency and visual distance, we aim to facilitate the design of sensory substitution devices that take visual distance information (ranging from 1 m to 12 m) and convert it into non-visual information (auditory frequency within the range 47-2764 Hz or vibrotactile frequency within the range…
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Taxonomy
TopicsMultisensory perception and integration · Tactile and Sensory Interactions · Visual perception and processing mechanisms