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Articulatory Variability is Reduced by Repetition and Predictability.

Fabian Tomaschek1, Denis Arnold2, Konstantin Sering1

  • 1Department of General Linguistics, University of Tübingen, Germany.

Language and Speech
|August 20, 2020
PubMed
Summary
This summary is machine-generated.

Practice improves speech articulation by reducing variability in movements. Repeating common words like "sie" [zi] leads to faster, smoother speech, especially in vowel production.

Keywords:
Articulationpracticeprecisionpredictabilityvariability

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Area of Science:

  • Linguistics
  • Speech Science
  • Motor Control

Background:

  • Motor skill acquisition involves repetition, leading to faster, smoother movements with less variation.
  • Speech articulation benefits from practice, improving trajectory speed and smoothness.
  • The impact of practice on articulatory variability remains under-explored.

Purpose of the Study:

  • To investigate how repetition and predictability affect the articulation of the frequent German word "sie" [zi].
  • To quantify the influence of practice on articulatory variability in speech.

Main Methods:

  • Analysis of articulatory movements during repeated utterances of "sie" [zi].
  • Measurement of kinematic behavior, speaking rate, and conditional probability of the word.
  • Focus on variability changes, particularly during the vocalic target [i].

Main Results:

  • Articulatory variability correlates with speaking rate and the duration of "sie" [zi].
  • Overall articulatory variability decreases with increased repetition of "sie" [zi].
  • Higher predictability (conditional probability) of "sie" [zi] also reduces variability, most notably in the [i] vowel production.

Conclusions:

  • Practice demonstrably reduces articulatory variability in speech.
  • Even highly frequent speech gestures benefit from repetition and predictability.
  • Findings suggest motor learning principles apply to speech articulation, impacting variability reduction.