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Foreign Accent and Forensic Speaker Identification in Voice Lineups: The Influence of Acoustic Features Based on Prosody

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Published on: September 27, 2024

Disambiguating durational cues for speech segmentation.

Padraic Monaghan¹, Laurence White, Marjolein M Merkx

¹Centre for Research in Human Development and Learning, Department of Psychology, Lancaster University, Lancaster LA1 4YF, United Kingdom. p.monaghan@lancaster.ac.uk

The Journal of the Acoustical Society of America

|July 19, 2013

Summary

This summary is machine-generated.

Vowel lengthening in English signals word boundaries, either through lexical stress or final position. Listeners can distinguish these cues, even when they appear to conflict, aiding speech segmentation.

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Area of Science:

Phonetics
Speech Perception
Linguistics

Background:

Vowel lengthening occurs in both lexically stressed and word-final syllables.
These lengthening cues aid in segmenting continuous speech.
In English, stress-initial words can create conflicting lengthening cues for word boundaries.

Purpose of the Study:

To investigate how listeners distinguish vowel lengthening cues for lexical stress versus word-final position in English.
To determine if distributional information in speech allows listeners to resolve potential conflicts in lengthening cues.

Main Methods:

Analysis of a large corpus of English speech.
Examination of acoustic properties of vowels in stressed and final syllables.

Main Results:

Speakers provide sufficient distributional information to differentiate lengthening cues.
Listeners can determine if vowel lengthening signals lexical stress or word finality.
Listeners do not solely rely on the congruence of multiple suprasegmental cues.

Conclusions:

Listeners can effectively use distributional information to resolve ambiguity in vowel lengthening cues.
This mechanism aids in accurate word segmentation in continuous English speech.
The study highlights the sophisticated processing of prosodic cues in speech perception.