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Updated: May 25, 2026

Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody
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Perceptual effects of plosive feature modification.

Abhinauv Kapoor1, Jont B Allen

  • 1Department of Electrical and Computer Engineering, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA.

The Journal of the Acoustical Society of America
|January 28, 2012
PubMed
Summary

Acoustic burst features are the primary cues for identifying plosive sounds like /ta, ka, da, ga/. Modifying burst intensity directly impacts recognition scores, suggesting they are crucial for speech perception.

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Area of Science:

  • Speech Processing
  • Acoustic Phonetics
  • Psychoacoustics

Background:

  • Previous research in the 1970-1980s explored acoustic cues for consonant-vowel contexts.
  • The relative importance of transitional and burst features remained unresolved.
  • Limitations in signal processing hindered precise manipulation of acoustic details.

Purpose of the Study:

  • To investigate the impact of acoustic burst feature strength on speech recognition.
  • To determine the primary acoustic cues for identifying plosive sounds (/ta, ka, da, ga/).
  • To re-evaluate the role of burst and transitional cues using advanced signal processing.

Main Methods:

  • Utilized refined signal processing for visualization and modification of acoustic details.
  • Experimentally manipulated the intensity of the acoustic burst feature.
  • Measured recognition scores as a function of signal-to-noise ratio (SNR) for four plosive sounds.

Main Results:

  • Demonstrated high correlations between relative burst intensity and recognition scores (P(c)(SNR)).
  • Identified burst features as primary acoustic cues for the tested plosives.
  • Observed that removal of burst features led to dominance of conflicting acoustic cues, not transitional cues.

Conclusions:

  • Acoustic burst features are the principal cues for identifying the plosive sounds /ta, ka, da, ga/.
  • Findings contrast with prior studies due to more precise acoustic manipulation methods.
  • Results challenge the concept of redundant acoustic cues in speech perception, particularly transitional cues.