國立虎尾科技大學 |

Developmental Acoustic Analysis of the /r/ Phoneme.

Record Type:	Language materials, manuscript : Monograph/item
Title/Author:	Developmental Acoustic Analysis of the /r/ Phoneme./
Author:	Becvar, Brittany Patricia.
Description:	1 online resource (37 pages)
Notes:	Source: Masters Abstracts International, Volume: 56-04.
Contained By:	Masters Abstracts International56-04(E).
Subject:	Speech therapy. -
Online resource:	click for full text (PQDT)
ISBN:	9781369770179

Developmental Acoustic Analysis of the /r/ Phoneme.
Becvar, Brittany Patricia.

Developmental Acoustic Analysis of the /r/ Phoneme. - 1 online resource (37 pages)

Source: Masters Abstracts International, Volume: 56-04.

Thesis (M.S.)

Includes bibliographical references

The purpose of this study was to identify acoustic markers that correlate with accurate and inaccurate /r/ production in children ages 5--8 using signal processing. In addition, the researcher aimed to identify predictive acoustic markers that relate to changes in /r/ accuracy. A total of 35 children (23 accurate, 12 inaccurate, 8 longitudinal) were recorded. Computerized stimuli were presented on a PC laptop computer and the children were asked to do five tasks to elicit spontaneous and imitated /r/ production in all positions. Files were edited and analyzed using a filter bank approach centered at 40 frequencies based on the Mel-scale. T-tests were used to compare spectral energy of tokens between accurate and inaccurate groups and additional t-tests were used to compare duration of accurate and inaccurate files. Results included significant differences between the accurate and inaccurate productions of /r/, notable differences in the 24--26 mel bin range, and longer duration of inaccurate /r/ than accurate. Signal processing successfully identified acoustic features of accurate and inaccurate production of /r/ and candidate predictive markers that may be associated with acquisition of /r/.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369770179Subjects--Topical Terms:

715798
Speech therapy.
Index Terms--Genre/Form:

554714
Electronic books.

Developmental Acoustic Analysis of the /r/ Phoneme.
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100 1 $a Becvar, Brittany Patricia. $3 1183913
245 1 0 $a Developmental Acoustic Analysis of the /r/ Phoneme.
264 0 $c 2017
300 $a 1 online resource (37 pages)
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500 $a Source: Masters Abstracts International, Volume: 56-04.
500 $a Adviser: Tamiko Azuma.
502 $a Thesis (M.S.) $c Arizona State University $d 2017.
504 $a Includes bibliographical references
520 $a The purpose of this study was to identify acoustic markers that correlate with accurate and inaccurate /r/ production in children ages 5--8 using signal processing. In addition, the researcher aimed to identify predictive acoustic markers that relate to changes in /r/ accuracy. A total of 35 children (23 accurate, 12 inaccurate, 8 longitudinal) were recorded. Computerized stimuli were presented on a PC laptop computer and the children were asked to do five tasks to elicit spontaneous and imitated /r/ production in all positions. Files were edited and analyzed using a filter bank approach centered at 40 frequencies based on the Mel-scale. T-tests were used to compare spectral energy of tokens between accurate and inaccurate groups and additional t-tests were used to compare duration of accurate and inaccurate files. Results included significant differences between the accurate and inaccurate productions of /r/, notable differences in the 24--26 mel bin range, and longer duration of inaccurate /r/ than accurate. Signal processing successfully identified acoustic features of accurate and inaccurate production of /r/ and candidate predictive markers that may be associated with acquisition of /r/.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Speech therapy. $3 715798
650 4 $a Linguistics. $3 557829
655 7 $a Electronic books. $2 local $3 554714
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710 2 $a Arizona State University. $b Communication Disorders. $3 1183914
773 0 $t Masters Abstracts International $g 56-04(E).
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