Audio Data Impression System for Visually Impaired Users
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Solution Overview
Problem
Existing assistive technologies, such as screen readers, struggle to effectively convey the overall trends and shapes of data to visually impaired users, as they provide detailed numerical information without a high-level representation, making it difficult for users to discern data trends quickly.
Innovation Solution
A computer system that converts visual data representations into audio impressions, using pitch variations and instrument selections to reflect data magnitudes, allowing users to perceive data shapes and trends more intuitively, particularly for charts with large amounts of data points.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If screen readers provide detailed numerical information for each data point, then information completeness is improved, but user comprehension of overall trends deteriorates
Solution Approach 1:
The audio output is segmented into two distinct portions: a first portion that provides detailed numerical information for individual data points, and a second portion that synthesizes overall data trends and patterns. This segmentation allows users to selectively process detailed information when needed while receiving synthesized summaries for overall comprehension, thereby resolving the contradiction between information completeness and ease of understanding.
Solution Approach 2:
The system applies partial action by providing detailed numerical information only when necessary (first portion), while using synthesized summaries for routine data presentation (second portion). This selective approach prevents information overload while maintaining completeness when needed, addressing the contradiction between providing sufficient information and ensuring user comprehension.
2Ease of operation
If audio impressions use pitch variations to represent data magnitudes, then data trend perception is improved, but audio complexity increases
Solution Approach 1:
The system changes audio parameters (pitch/frequency) to represent data magnitudes and trends. By mapping data values to pitch variations, the system enables visually impaired users to perceive data trends intuitively through auditory feedback, transforming visual data representation into an accessible audio format without requiring complex additional hardware.
3Measurement precision
If assistive technologies provide comprehensive data details, then information accuracy is improved, but processing time increases
Solution Approach 1:
The audio output is divided into two portions: a first portion that provides detailed numerical information for accuracy, and a second portion that provides synthesized summaries for quick comprehension. This segmentation allows users to obtain accurate information when needed while reducing overall processing time through the synthesized summary portion.
Solution Approach 2:
The system applies partial action by providing detailed information selectively in the first portion while using synthesized summaries in the second portion for faster processing. This approach maintains information accuracy where necessary while reducing overall processing time through selective detail provision.
Data Source
AI summary
A system for generating audio impressions of data for a visually-impaired user. The system receives data that is displayable by a chart. The data comprises a plurality of values. The system generates an audio impression of the received data. The audio impression includes a first portion and a second portion. The first portion is based upon at least a first value of the received data. The second portion is based upon at least a second value of the received data. An audible difference between the first portion and the second portion reflects the magnitude of a difference between the first value and the second value.