2024-03-28T12:12:06Zhttps://keep.lib.asu.edu/oai/requestoai:keep.lib.asu.edu:node-1482042021-08-11T21:09:57Zoai_pmh:all148204
https://hdl.handle.net/2286/R.I.63489
http://rightsstatements.org/vocab/InC/1.0/
2021-05
45 pages
eng
Conger, Sarah Grace
Weinhold, Juliet
Daliri, Ayoub
Bruce, Laurel
College of Health Solutions
College of Health Solutions
College of Health Solutions
Barrett, The Honors College
Text
The purpose of this longitudinal study was to predict /r/ acquisition using acoustic signal processing. 19 children, aged 5-7 with inaccurate /r/, were followed until they turned 8 or acquired /r/, whichever came first. Acoustic and descriptive data from 14 participants were analyzed. The remaining 5 children continued to be followed. The study analyzed differences in spectral energy at the baseline acoustic signals of participants who eventually acquired /r/ compared to that of those who did not acquire /r/. Results indicated significant differences between groups in the baseline signals for vocalic and postvocalic /r/, suggesting that the acquisition of certain allophones may be predictable. Participants’ articulatory changes made during the progression of acquisition were also analyzed spectrally. A retrospective analysis described the pattern in which /r/ allophones were acquired, proposing that vocalic /r/ and the postvocalic variant of consonantal /r/ may be acquired prior to prevocalic /r/, and /r/ followed by low vowels may be acquired before /r/ followed by high vowels, although individual variations exist.
Speech
Signal Processing
Acquisition
Allophone
Predicting /r/ Acquisition: A Longitudinal Analysis Using Signal Processing