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Article
Lexical and Indexical Cues in Masking by Competing Speech
The Journal of the Acoustical Society of America (2008)
  • Karen S Helfer, University of Massachusetts - Amherst
  • Richard L. Freyman
Abstract

Three experiments were conducted using the TVM sentences, a new set of stimuli for competing speech research. These open-set sentences incorporate a cue name that allows the experimenter to direct the listener's attention to a target sentence. The first experiment compared the relative efficacy of directing the listener's attention to the cue name versus instructing the subject to listen for a particular talker's voice. Results demonstrated that listeners could use either cue about equally well to find the target sentence. Experiment 2 was designed to determine whether differences in intelligibility among talkers' voices that were noted when three utterances were presented together persisted when each talker's sentences were presented in steady-state noise. Results of experiment 2 showed only minor intelligibility differences between talkers' utterances presented in noise. The final experiment considered how providing accurate and inaccurate information about the target talker's voice influenced speech recognition performance. This voice cue was found to have minimal effect on listeners' ability to understand the target utterance or ignore a masking voice.

Publication Date
November, 2008
Publisher Statement
Published version from the Journal of the Acoustical Society of America is located at http://www.ncbi.nlm.nih.gov/pubmed/19173430
Citation Information
Karen S Helfer and Richard L. Freyman. "Lexical and Indexical Cues in Masking by Competing Speech" The Journal of the Acoustical Society of America Iss. 125 (2008)
Available at: http://works.bepress.com/karen_helfer/3/