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Computational simulation of CV combination preferences in babbling.

Hosung Nam1, Louis M Goldstein2, Sara Giulivi3

  • 1Haskins Laboratories, New Haven, CT, USA.

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Summary

Articulatory Phonology (AP) better explains preferred consonant-vowel (CV) syllable structures in babbling than the frame-then-content (F/C) model. Computational modeling shows articulatory synergies, not just jaw oscillation, influence these early speech patterns.

Keywords:
CASYCV preferenceTADAarticulatory phonologybabblingcomputational simulationframe-content model

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Area of Science:

  • Linguistics
  • Speech Science
  • Computational Phonetics

Background:

  • Babbling exhibits preferred consonant-vowel (CV) syllable structures, such as labial consonants with central vowels.
  • The "frame-then-content" (F/C) model posits random tongue positions and systematic jaw oscillation during babbling.
  • Articulatory Phonology (AP) suggests CV preferences arise from synergistic tongue movements.

Purpose of the Study:

  • To computationally model and compare the predictive power of the F/C model and AP for babbling CV syllable preferences.
  • To determine which model better accounts for observed patterns in infant speech production.

Main Methods:

  • Articulatory synthesis was used to create computational models of both the F/C and AP accounts.
  • Simulations generated CV syllable structures based on each model's assumptions.
  • The simulated patterns were compared against empirical data from babbling.

Main Results:

  • Simulations based on Articulatory Phonology showed stronger correlations with actual babbling patterns.
  • The frame-then-content model's predictions did not align as well with observed CV syllable preferences.
  • Articulatory synergies were found to influence a broader range of CV syllables than previously suggested.

Conclusions:

  • The findings do not support the core assumptions of the frame-then-content model.
  • Articulatory Phonology provides a more comprehensive explanation for preferred CV syllable structures in babbling.
  • Synergistic articulatory movements play a significant role in early speech development.