NDLI: Scanning for Digital Content: How Blind and Sighted People Perceive Concurrent Speech

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Scanning for Digital Content: How Blind and Sighted People Perceive Concurrent Speech

Content Provider	ACM Digital Library
Author	Guerreiro, João Gonçalves, Daniel
Copyright Year	2016
Abstract	The widespread availability of digital media has changed the way that people consume information and has impacted the consumption of auditory information. Despite this recent popularity among sighted people, the use of auditory feedback to access digital information is not new for visually impaired users. However, its sequential nature undermines both blind and sighted people’s ability to efficiently find relevant information in the midst of several potentially useful items. We propose taking advantage of the Cocktail Party Effect, which states that people are able to focus on a single speech source among several conversations, but still identify relevant content in the background. Therefore, in contrast to one sequential speech channel, we hypothesize that people can leverage concurrent speech channels to quickly get the gist of digital information. In this article, we present an experiment with 46 (23 blind, 23 sighted) participants, which aims to understand people’s ability to search for relevant content listening to two, three, or four concurrent speech channels. Our results suggest that both blind and sighted people are able to process concurrent speech in scanning scenarios. In particular, the use of two concurrent sources may be used both to identify and understand the content of the relevant sentence. Moreover, three sources may be used for most people depending on the task intelligibility demands and user characteristics. Contrasting with related work, the use of different voices did not affect the perception of concurrent speech but was highly preferred by participants. To complement the analysis, we propose a set of scenarios that may benefit from the use of concurrent speech sources, for both blind and sighted people, toward a Design for All paradigm.
Starting Page	1
Ending Page	28
Page Count	28
File Format	PDF
ISSN	19367228
e-ISSN	19367236
DOI	10.1145/2822910
Volume Number	8
Issue Number	1
Journal	ACM Transactions on Accessible Computing (TACCESS)
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2016-01-29
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cocktail party effect Accessibility Auditory feedback Blind Concurrent speech Scanning Screen reader Sighted Simultaneous speech Skimming Spatial audio Visually impaired Web browsing
Content Type	Text
Resource Type	Article
Subject	Human-Computer Interaction Computer Science Applications

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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