Lexical and indexical cues in masking by competing speech

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...

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Bibliographic Details
Published in:The Journal of the Acoustical Society of America 2009, Vol.125 (1), p.447-456
Main Authors: Helfer, Karen S., Freyman, Richard L.
Format: Article
Language:English
Subjects:
Audition
Biological and medical sciences
Cues
Fundamental and applied biological sciences. Psychology
Humans
Noise
Perception
Perceptual Masking
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Speech
Speech Perception
Vocabulary
Voice
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Summary: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.
ISSN:0001-4966
1520-8524
DOI:10.1121/1.3035837