A Model of Stuttering and the Production of Speech under Delayed Auditory Feedback Conditions
The models of stuttering and speech produced under delayed auditory feedback conditions to be discussed in this chapter are based on some recent theories of linguistic rhythm (Martin, 1972; Shields, McHugh & Martin, 1974; Fowler, 1983). If, as has been suggested (Abercrombie, 1967; Donovan & Darwin, 1979), the perception of speech is rhythmic, a speaker must presumably control the intervals between the units of the rhythmic structure the listener perceives; in a stress timed language, such as English, these units are considered to be coincident with stressed syllables (Abercrombie, 1967). At the same time, suppose a listener is able to hypothesize the rhythmic structure intended by the speaker, based on his current perception of the relative time at which the units of the rhythmic structure occur in the speaker’s utterance; in this case, the listener should be able to predict when future units of the rhythmic structure (i.e. stressed syllable in English) will be perceived (Shields, McHugh and Martin, 1974). The relationship between the units of a rhythmic structure encoded as part of the speech production plan and the listener’s prediction of the time of occurrence of future units is fundamental to the model of delayed auditory feedback discussed below.
KeywordsSpeech Production Auditory Feedback Auditory Perception Stressed Syllable Rhythmic Structure
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