Folia Phoniatrica et Logopaedica

Original Paper

The Perception of Speech Naturalness of Post-Therapeutic and Altered Auditory Feedback Speech of Adults with Mild and Severe Stuttering

Stuart A. · Kalinowski J.

Author affiliations

Department of Communication Sciences and Disorders, East Carolina University, Greenville, N.C., USA

Keywords: StutteringSpeech naturalnessAltered auditory feedbackPost-therapeutic speech

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Folia Phoniatr Logop 2004;56:347–357
https://doi.org/10.1159/000081082

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: March 02, 2004
Published online: November 30, 2004
Issue release date: November – December

Number of Print Pages: 11
Number of Figures: 1
Number of Tables: 2

ISSN: 1021-7762 (Print)
eISSN: 1421-9972 (Online)

For additional information: https://www.karger.com/FPL

Abstract

The effect of therapy and altered auditory feedback (AAF) on the perception of speech naturalness of people who stutter was examined. Thirty-five naïve young adult listeners rated speech samples from fluent speakers and individuals who stutter. Samples came from normal adults who spoke Standard American English; adults with mild or severe stuttering who spoke under conditions of non-altered feedback (NAF), delayed auditory feedback (DAF), and frequency-altered feedback (FAF); and adults with mild or severe stuttering prior to and following successful completion of a Precision Fluency Shaping Program. Speech produced under AAF was rated as significantly more natural sounding than speech from the same individuals under NAF (p < 0.0001). Speech produced during FAF was judged to be more natural sounding than that produced during DAF for those with mild (p = 0.003) and severe (p < 0.0001) stuttering. Mild stuttered speech was judged to have more natural-sounding speech than severe stuttered speech during AAF (p < 0.0001). Speech from individuals following therapy was rated significatly less natural sounding than that from individuals during AAF for both mild and severe stuttering (p < 0.0001). The speech of individuals prior to therapy was rated significantly more natural than their speech produced after therapy (p < 0.0001). Speech from normal fluent speakers was rated as significantly more natural sounding than all samples produced from the individuals who stutter (p < 0.0001). These findings support the contention that AAF benefits those who stutter through a reduction of stuttering with a gain in perceived speech naturalness.

© 2004 S. Karger AG, Basel



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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Received: March 02, 2004
Published online: November 30, 2004
Issue release date: November – December

Number of Print Pages: 11
Number of Figures: 1
Number of Tables: 2

ISSN: 1021-7762 (Print)
eISSN: 1421-9972 (Online)

For additional information: https://www.karger.com/FPL

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