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Table of Contents
Vol. 53, No. 6, 2001
Issue release date: November – December
Section title: Original Paper
Folia Phoniatr Logop 2001;53:291–307
(DOI:10.1159/000052683)

Perception of Lateral Misarticulation and Its Physical Correlates

Akagi M.a · Suzuki N.b · Hayashi K.a · Saito H.b · Michi K.-i.b
aSchool of Information Science, Japan Advanced Institute of Science and Technology, Ishikawa, bSchool of Dentistry, Showa University, Tokyo, Japan

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Article / Publication Details

First-Page Preview
Abstract of Original Paper

Published online: November 22, 2001
Issue release date: November – December

Number of Print Pages: 17
Number of Figures: 13
Number of Tables: 5

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

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

Abstract

In order to clarify the relationship between perceptual diagnosis of lateral misarticulation (LM) by sophisticated listeners and the physical correlates of LM, three experiments using sustained speech /∫/ were conducted. Experiment 1 was designed to compare the spectral envelopes of normal speech (NS) /∫/ with those of LM /∫/. Experiment 2 was designed to collect the auditory impressions of sophisticated listeners listening to LM and NS /∫/ with specific spectral envelope bands replaced by LM. These two experiments showed that: (1) the spectral envelopes of LM are flat or decrease along the frequency axis in the frequency band above approximately 4 kHz, and there is a substantial peak at around 3.2 kHz in LM, which varies peculiarly with time; (2) the replacement of the spectral envelope between 2.5 and 4.5 kHz of NS with that of LM resulted in a remarkable increase in auditory impressions of LM. The facts suggest that the spectral envelope characteristic of LM has a peculiar variation at around 3.2 kHz. Additionally, experiment 3 estimated the spectrum of sustained speech /∫/ using vocal tract area functions. The results suggest that typical peaks of LM are related to the length and position of the vocal tract constriction region.

© 2001 S. Karger AG, Basel


Article / Publication Details

First-Page Preview
Abstract of Original Paper

Published online: November 22, 2001
Issue release date: November – December

Number of Print Pages: 17
Number of Figures: 13
Number of Tables: 5

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

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


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