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Locus equations derived from compensatory articulation

H M Sussman1, D Fruchter, A Cable

  • 1University of Texas, Austin, Texas 78712, USA.

The Journal of the Acoustical Society of America
|May 1, 1995
PubMed
Summary
This summary is machine-generated.

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Compensatory articulation from bite blocks did not alter locus equations, which characterize consonant place categories. The linear relationship between F2 transition onset and offset frequencies remained stable, suggesting robust articulatory patterns.

Area of Science:

  • Speech acoustics
  • Phonetics
  • Articulatory phonology

Background:

  • Locus equations model F2 transitions, normalizing for vowel context.
  • These equations characterize consonantal place of articulation.
  • Compensatory articulation may affect speech sound production.

Purpose of the Study:

  • Investigate if bite blocks alter locus equations.
  • Determine if compensatory articulation affects F2 transition linearity.
  • Examine effects on locus equation slopes and intercepts for stop consonants.

Main Methods:

  • Six speakers produced /b, d, g/ in ten vowel contexts.
  • Speech was recorded under normal and bite block conditions.
  • Locus equations were derived and compared between conditions.

Related Experiment Videos

Main Results:

  • Extremely linear and nearly identical scatterplots were observed in both conditions.
  • No adaptation to bite blocks was found between initial and final trials.
  • Differential slopes and y-intercepts remained consistent.

Conclusions:

  • Compensatory articulation due to bite blocks does not alter locus equations.
  • The linear relationship of F2 transition endpoints is robust.
  • Findings support the orderly output constraint theory in speech production.