Rhythmic Versus Phonemic Interference in Delayed Auditory Feedback

Autor(en): Kaspar, Kai 
Ruebeling, Hartmut
Stichwörter: Audiology & Speech-Language Pathology; CHILDREN; CRITICAL INTERVAL; delayed auditory feedback; displaced rhythm hypothesis; Linguistics; MUSIC; PERFORMANCE; phonemic content hypothesis; Rehabilitation; SPEAKERS; SPEECH; speech monitoring; STUTTER; TASKS
Erscheinungsdatum: 2011
Herausgeber: AMER SPEECH-LANGUAGE-HEARING ASSOC
Journal: JOURNAL OF SPEECH LANGUAGE AND HEARING RESEARCH
Volumen: 54
Ausgabe: 3
Startseite: 932
Seitenende: 943
Zusammenfassung: 
Purpose: Delayed auditory feedback (DAF) of a speaker's voice disturbs normal speech production. Various traditional theories assume that the content of the delayed feedback signal interferes with the actual production of a particular speech unit (phonemic content hypothesis). The displaced rhythm hypothesis as an alternative explanation suggests that speech disturbances arise from a disruptive rhythm that is produced by the delayed speech signal. The present experimental study directly contrasted the role of rhythm and speech content in a DAF task using speech units as stimuli. Method: One hundred fifty-one participants read aloud 4 different sequences of double syllables that varied in phonemic content and rhythm while auditory feedback was either nondelayed or delayed by 200 or 400 ms. Results: In line with previous studies, the authors found a peak of disturbances at a delay of about 200 ms, independent of speech rate. More important, the present results clearly support the displaced rhythm hypothesis. A speech rate dependency of this effect was also found. Conclusion: Rhythm seems to be a significant criterion of speech monitoring, and hence a mismatch between spoken words and auditory feedback realized by DAF induces obvious speech problems on rhythmic level regardless of phonemic discrepancy at the same time.
ISSN: 10924388
DOI: 10.1044/1092-4388(2010/10-0109)

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