What's in an accent? The impact of accented synthetic speech on lexical choice in human-machine dialogue

Benjamin R. Cowan, Holly P. Branigan, Philip Doyle, Justin Edwards, Diego Garaialde, João Cabral, Ali Hayes-Brady, Leigh Clark

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The assumptions we make about a dialogue partner's knowledge and communicative ability (i.e. our partner models) can influence our language choices. Although similar processes may operate in human-machine dialogue, the role of design in shaping these models, and their subsequent effects on interaction are not clearly understood. Focusing on synthesis design, we conduct a referential communication experiment to identify the impact of accented speech on lexical choice. In particular, we focus on whether accented speech may encourage the use of lexical alternatives that are relevant to a partner's accent, and how this is may vary when in dialogue with a human or machine. We find that people are more likely to use American English terms when speaking with a US accented partner than an Irish accented partner in both human and machine conditions. This lends support to the proposal that synthesis design can influence partner perception of lexical knowledge, which in turn guide user's lexical choices. We discuss the findings with relation to the nature and dynamics of partner models in human machine dialogue.
Original languageEnglish
Title of host publicationProceedings of the 1st International Conference on Conversational User Interfaces, CUI 2019
PublisherAssociation for Computing Machinery, Inc
Pages1-8
ISBN (Electronic)9781450371872
DOIs
Publication statusPublished - 22 Aug 2019
Event1st International Conference on Conversational User Interfaces, CUI 2019 - Dublin, Ireland
Duration: 22 Aug 201923 Aug 2019

Publication series

NameACM International Conference Proceeding Series

Conference

Conference1st International Conference on Conversational User Interfaces, CUI 2019
CountryIreland
CityDublin
Period22/08/1923/08/19

Keywords

  • lexical choice
  • partner modeling
  • perspective taking
  • speech interface
  • speech synthesis

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