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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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[Free sorting task of speech disorders by expert and non-expert listeners]
V Woisard1, P Gaillard, D Duez
1Hôpital Larrey Rangueil, Unité de la voix et de la déglutition, service ORL, 31059 Toulouse cedex 09, France. woisard.v@chu-toulouse.fr
Revue De Laryngologie - Otologie - Rhinologie
|October 19, 2012
Summary
Speech intelligibility significantly influences how speech motor disorders (SMD) are perceived, regardless of listener expertise. Listeners also use a concept of "normality" when classifying speech, impacting rehabilitation strategies.
Area of Science:
- Linguistics
- Audiology
- Neurology
Context:
- Speech motor disorders (SMD) present complex perceptual challenges.
- Listener perception of SMD influences classification and management.
- Understanding listener criteria is crucial for effective speech rehabilitation.
Purpose:
- To investigate the primary factors influencing the perception and classification of speech motor disorders.
- To determine if speech intelligibility is a universal classification factor across different listener groups.
- To explore the role of 'normality' perception in classifying speech production.
Summary:
- This study analyzed listener perception of speech stimuli from individuals with and without SMD.
- Listeners, both expert and non-expert, sorted speech samples based on perceived speech characteristics.
- Speech intelligibility emerged as a key factor, alongside a reference to 'normality', influencing classification.
Impact:
- Findings suggest a dual-factor model for speech perception in SMD: comparison to a 'normality prototype' and assessment of intelligibility.
- This research can refine speech disorder classification systems.
- Results offer insights for developing targeted speech rehabilitation programs focusing on perceptual criteria.

