Measuring communication difficulty through effortful speech production during conversation

Timothy Beechey*, Jörg M. Buchholz, Gitte Keidser

*Corresponding author for this work

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

This study describes the use of a novel conversation elicitation framework to collect fluent, dynamic conversational speech in simulated realistic acoustic environments of varying complexities. Our aim is to quantify speech modifications during conversation, which characterize effortful speech, as a function of the difficulty of the acoustic environment. We report speech production data at the acoustic-phonetic level (vocal level, mid-frequency emphasis, formant frequencies and formant bandwidths), as well as at higher levels of analysis including utterance duration and turn overlap durations. The sensitivity and test-retest reliability of different speech production measures to changes in acoustic environment are reported. We propose a multi-dimensional view of effortful speech modifications. Considering speech modifications across different linguistic levels provides a richer view of the effects of the acoustic environment on communication as compared with consideration of low-level acoustic-phonetic markers alone. Finally, we describe how consideration of speech modification data may form the basis of a measure of communication effort with scope for the assessment of the impacts of hearing impairment and amplification upon ease of spoken communication.

Original languageEnglish
Pages (from-to)18-29
Number of pages12
JournalSpeech Communication
Volume100
DOIs
Publication statusPublished - Jun 2018

Keywords

  • Lombard speech
  • conversation
  • communication
  • effort
  • accommodation

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