Evaluation and context for in-car speech systems for older adults

Authors:
Mary Zajicek;Ing-Marie Jonsson
Affiliations:
Oxford Brookes University, Oxford, UK;Stanford University, Palo Alto, CA
Venue:
CLIHC '05 Proceedings of the 2005 Latin American conference on Human-computer interaction
Year:
2005

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Abstract

Listeners to speech based information systems attribute qualities to voices which will make them receptive, or otherwise, to the information. This paper looks at the value of laboratory-based usability testing on voices for an in-car speech messaging system. It compares results concerning the users' perception of voice, in particular source credibility, performed first on voices presented out of context in a laboratory setting and then the same voices embedded in an in-car system in a driving simulator. In the case of older adults the results are significantly different raising issues of context and value in usability testing for this group.