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Intonation of clause-internal filled pauses

E E Shriberg1, R J Lickley

  • 1SRI International, Menlo Park, CA 94025.

Phonetica
|January 1, 1993
PubMed
Summary

The intonation of filled pauses is relative to preceding speech context. Higher peak fundamental frequency (F0) values in speech correlate with higher F0 in filled pauses.

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Area of Science:

  • Linguistics
  • Phonetics
  • Speech Science

Background:

  • Filled pauses, such as 'um' and 'uh', are common in spontaneous speech.
  • The prosodic properties of filled pauses, specifically their fundamental frequency (F0), are not fully understood.
  • Previous research has debated whether filled pause intonation is context-dependent or independent.

Purpose of the Study:

  • To investigate the relationship between the intonation of clause-internal filled pauses and the preceding prosodic context.
  • To determine if filled pause fundamental frequency (F0) is relative to, or independent of, prior peak F0 and baseline F0.

Main Methods:

  • Analysis of clause-internal filled pauses and preceding peak fundamental frequency (F0) values.
  • Application of a linear model to assess the proportionality of filled pause F0 to preceding peak F0 and a speaker-dependent baseline F0.
  • Comparison with a two-parameter model allowing free variation of peak and baseline coefficients.

Main Results:

  • A systematic association was found between higher preceding peak F0 values and higher filled pause F0 values, supporting the 'relative' hypothesis.
  • A linear model accurately predicted filled pause F0 as an invariant proportion of the distance between preceding peak F0 and baseline F0.
  • The model's accuracy was reduced for filled pauses following sentence-initial peaks but unaffected by temporal variables.

Conclusions:

  • The intonation of filled pauses is significantly influenced by the preceding prosodic context.
  • A relative scaling model effectively captures the relationship between peak F0 and filled pause F0.
  • Further research may be needed to refine models for filled pauses in specific syntactic positions.

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