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Children's perception of their synthetically corrected speech production
KTH, School of Computer Science and Communication (CSC), Speech, Music and Hearing, TMH, Speech Communication and Technology.
KTH, School of Computer Science and Communication (CSC), Speech, Music and Hearing, TMH, Speech Communication and Technology.ORCID iD: 0000-0002-4628-3769
2014 (English)In: Clinical Linguistics & Phonetics, ISSN 0269-9206, E-ISSN 1464-5076, Vol. 28, no 6, 373-395 p.Article in journal (Refereed) Published
Abstract [en]

We explore children's perception of their own speech - in its online form, in its recorded form, and in synthetically modified forms. Children with phonological disorder (PD) and children with typical speech and language development (TD) performed tasks of evaluating accuracy of the different types of speech stimuli, either immediately after having produced the utterance or after a delay. In addition, they performed a task designed to assess their ability to detect synthetic modification. Both groups showed high performance in tasks involving evaluation of other children's speech, whereas in tasks of evaluating one's own speech, the children with PD were less accurate than their TD peers. The children with PD were less sensitive to misproductions in immediate conjunction with their production of an utterance, and more accurate after a delay. Within-category modification often passed undetected, indicating a satisfactory quality of the generated speech. Potential clinical benefits of using corrective re-synthesis are discussed.

Place, publisher, year, edition, pages
Informa Healthcare, 2014. Vol. 28, no 6, 373-395 p.
Keyword [en]
phonological disorder, speech disorder, speech perception, speech acquisition
National Category
Specific Languages
Research subject
Speech and Music Communication
Identifiers
URN: urn:nbn:se:kth:diva-143099DOI: 10.3109/02699206.2013.868928ISI: 000334938500001Scopus ID: 2-s2.0-84899103269OAI: oai:DiVA.org:kth-143099DiVA: diva2:705406
Note

QC 20140611

Available from: 2014-03-17 Created: 2014-03-17 Last updated: 2017-12-05Bibliographically approved
In thesis
1. The /k/s, the /t/s, and the inbetweens: Novel approaches to examining the perceptual consequences of misarticulated speech
Open this publication in new window or tab >>The /k/s, the /t/s, and the inbetweens: Novel approaches to examining the perceptual consequences of misarticulated speech
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
Abstract [en]

This thesis comprises investigations of the perceptual consequences of children’s misarticulated speech – as perceived by clinicians, by everyday listeners, and by the children themselves. By inviting methods from other areas to the study of speech disorders, this work demonstrates some successful cases of cross-fertilization. The population in focus is children with a phonological disorder (PD), who misarticulate /t/ and /k/. A theoretical assumption underlying this work is that errors in speech production are often paralleled in perception, e.g. that children base their decision on whether a speech sound is a /t/ or a /k/ on other acoustic-phonetic criteria than those employed by proficient language users. This assumption, together with an aim at stimulating self-monitoring in these children, motivated two of the included studies. Through these studies, new insights into children’s perception of their own speech were achieved – insights entailing both clinical and psycholinguistic implications. For example, the finding that children with PD generally recognize themselves as the speaker in recordings of their own utterances lends support to the use of recordings in therapy, to attract children’s attention to their own speech production. Furthermore, through the introduction of a novel method for automatic correction of children’s speech errors, these findings were extended with the observation that children with PD tend to evaluate misarticulated utterances as correct when just having produced them, and to perceive inaccuracies better when time has passed. Another theme in this thesis is the gradual nature of speech perception related to phonological categories, and a concern that perceptual sensitivity is obscured in descriptions based solely on discrete categorical labels. This concern is substantiated by the finding that listeners rate “substitutions” of [t] for /k/ as less /t/-like than correct productions of [t] for intended /t/. Finally, a novel method of registering listener reactions during the continuous playback of misarticulated speech is introduced, demonstrating a viable approach to exploring how different speech errors influence intelligibility and/or acceptability. By integrating such information in the prioritizing of therapeutic targets, intervention may be better directed at those patterns that cause the most problems for the child in his or her everyday life.

Place, publisher, year, edition, pages
Stockholm: KTH Royal Institute of Technology, 2014. xiii, 105 p.
Series
TRITA-CSC-A, ISSN 1653-5723 ; 2014:03
Keyword
speech perception, speech disorders, speech synthesis, speech analysis
National Category
Specific Languages
Research subject
Speech and Music Communication
Identifiers
urn:nbn:se:kth:diva-143102 (URN)978-91-7595-050-1 (ISBN)
Public defence
2014-04-07, F3, Lindstedtsvägen 26, KTH, Stockholm, 10:00 (English)
Opponent
Supervisors
Note

QC 20140317

Available from: 2014-03-17 Created: 2014-03-17 Last updated: 2017-03-02Bibliographically approved

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