• 말소리와 음성과학
• /
• 제3권3호
• /
• pp.181-189
• /
• 2011

The present study aimed to determine the phonological errors of children in Korean-Vietnamese speaking multicultural families through comparison analyses with those of Korean monolingual peers with phonological disorders. The subjects were 38 children aged about 4-6 years. To examine phonological errors, the Urimal Test of Articulation and Phonation (words) was used. Performances were analyzed by frequency. The results showed some differences between the two groups. There was a tendency for children in Korean-Vietnamese speaking multicultural families to show a higher frequency of phonological errors than Korean monolingual children with phonological disorders. However, the former showed lower error percentages in a few error patterns than the latter such as syllable final consonant deletion, showing similar patterns to those of the normal children. They also showed very unique error patterns such as the highest error percentage in palatal affricates. It remains to be seen if these error patterns are just delay in acquisition or phonological disorders.

• 대한음성학회지:말소리
• /
• 제39호
• /
• pp.53-71
• /
• 2000

With the 130 patients who were diagnosed as functional articulation disorders with no physical problems, a statistical study was performed to investigate their background information and phonological processes of errors. The results are as follows: (1) Males showed higher prevalence than females, and 5-year-old-patients showed the highest in age. (2) Most patients showed errors of 2~5 phonemes (3) The most frequent errors were found in plosives and alveolar sounds, and the most frequent phonological process of errors in the aspects of manner and place of articulation were stop-assimilations and alveolar assimilations, respectively.

• 전자공학회논문지C
• /
• 제34C권5호
• /
• pp.55-65
• /
• 1997

In many cases, a dialogue system can't extract the correct analysis information of a user's spoken utterance, because of its own ungrammatical components. Therefore, in order to perform a correct before it performs the syntactic processing. In this paper, we use a real dialogue corpus and classify these ungrammatical errors as 4 categories : phonological, syntactic, semantic errors that consist of speech reparis and inversions, and propose an algorithm to detect and correct the errors. In short, this paper proposes a method to detect and correct the speech repairs and inversions that are classified as the phonological and syntactic errors to implement a robust dialogue system. And, through the test of real dialogue data, this paper shows an efficiency of the proposed algorithm.

• 대한음성학회:학술대회논문집
• /
• 대한음성학회 2000년도 3월 학술대회지
• /
• pp.141-155
• /
• 2000

With the 130 patients who were diagnosed as functional articulation disorders with no physical problems, statistical study was performed to investigate their background informations and phonological processes of errors. The results are as followings : (1) Males showed higher prevalence than females, and 5-year-patients showed the highest in age. (2) Most patients showed errol.s of 2 - 5 phonemes (3) The most frequent errors were found in plosives and alveoalrs, and the most frequent phonological process of errors in the aspects of manner and place of articulation were stop-assimilations and alveolar assimilations, respectively.

• 대한통합의학회지
• /
• 제9권4호
• /
• pp.167-181
• /
• 2021

Purpose : This study was conducted to investigate whether phonetic complexity affected the type and frequency of articulation errors and the acoustic duration of consonants and words produced by children with functional articulation and phonological disorders. Methods : The participants in this study were 20 children with functional articulation and phonological disorders and 20 children without such disorders who were between 3 years 7 months old and 4 years 11 months old. The participants were asked to name what they saw in pictures and their responses were recorded. The types and frequencies of articulation errors and the acoustic duration of words were analyzed and words were categorized as being of either 'high' or 'low' phonetic complexity. The acoustic duration of initial and final consonants and vowels following initial consonants were compared between the groups according to articulatory complexity. Results : Children with functional articulation and phonological disorders produced articulation errors more frequently when saying high complexity words and had longer word duration when saying low-complexity words than children without such disorders. There was no major difference in initial and final consonant duration between the groups. but the main effect of articulatory complexity on the duration of both consonants was significant. Conclusion : These results suggest that the articulatory-phonic structure of words influences the speech motor control ability of children with functional articulation and phonological disorders. When articulating consonants, children with functional articulation and phonological disorders had speech motor control ability similar to that of children without such disorders.

• 말소리와 음성과학
• /
• 제6권1호
• /
• pp.119-125
• /
• 2014

Many studies have reported an age-related decline in the ability to spell words correctly. The aim of this study was to investigate the deterioration on retrieving orthographic knowledge in 64 normal elderly Korean persons. The subjects were 64 in total: they were composed of 22 persons in their 50s, 20 persons in their 60s, and 22 persons in their 70s or older. We instructed them to write from a dictation of 60 words stimuli (20 regular words, 20 irregular words, 20 nonwords). Older adults made more errors than younger adults, and the age-related decline in performance was greater for irregular than regular and nonwords. With respect to the error pattern in the irregular words, the subjects showed more phonological plausible errors than phonological implausible errors. The number of self-correction was high in nonwords. Based on the results, we found that aging differentially affects the retrieval of orthographic knowledge on regular, irregular and nonwords.

• 대한음성학회지:말소리
• /
• 제62호
• /
• pp.33-49
• /
• 2007

The purpose of this study is 1) to investigate the phoneme inventories and phonological processes of cochlear implant(CI) children and 2) to describe their utterances using narrow phonetic transcription method. All ten subjects had more than 2 year-experience with CI and showed more than 85 % open-set sentence perception abilities. Average consonant accuracy was 81.36 % and it was improved up to 87.41% when distortion errors were not counted. They showed similar phonological processing patterns to HA or normal hearing children in some way as well as different phonological processing patterns from HA or normal hearing children. The prominent distortion error pattern was weakening of consonants. Every subject had his/her idiosyncratic error pattern that demanded his/her own individualized therapy program.

• 말소리와 음성과학
• /
• 제7권2호
• /
• pp.3-8
• /
• 2015

Denasalization that nasals are replaced by stops is an unusual error pattern related to manner of articulation. The purpose of this study is to investigate the prevalence of denasalization and to scrutinize the nasal production according to phonological context for typically developing children and children with speech sound disorders(SSD). 220 typically developing children and 48 SSD children from 2~6 years of age were tested with a formal word test, and those who demonstrate denasalization were selected. In addition, the nasal production of SSD children with denasalization were analyzed for the correctness and the error types using the formal word test and spontaneous conversation. The results were as follows: (1) Denasalization was shown in below 10% of 2-3 years of age with typically developing children and in above 20% of 2-5 years of age with SSD. (2) The SSD children who demonstrate denasalization were categorized into 4 types according to the error context of nasals; nasal errors with all word positions, nasal errors with word-final and word-medial positions, nasal errors with word-medial position preceding vowels, and nasal errors with word-medial position preceding obstruents. These results indicate that denasalization is a clinically important error pattern, and word-medial position preceding obstruents is an essential context for denasalization in terms of Korean phonotactics.

• 음성과학
• /
• 제15권3호
• /
• pp.53-63
• /
• 2008

This paper examined the acoustic differences in English speech production between English native speakers and Korean learners. Korean speakers seem to produce errors by over-applying the Korean phonological rules(nasalization and lateralization) to English speech under the conditions comparable to those of Korean which contain nasal+lateral or lateral+nasal sequences. Being based on this prediction, the experimental data is grouped into three sets, [n]+[l] sequence, [l]+[n]sequence, and [m]+[l] sequence. The result shows that, Korean speakers usually nasalize or lateralize the target words or phrases in every three categories while English natives don't. In set A([n]+[l] sequence), both nasalization and lateralization were found in [n]+[l] sequence, the same circumstances where both nasalization and lateralization can be placed as in Korean. In the case of set B([l]+[n] sequence), only lateralization is observed. It is because the nasalization never occurs in the sequence of l-n in Korean. There is no lateralization in set C([m]+[l] sequence), because only nasalization occurs in the sequence of m-l in Korean. This results reconfirmed that the nasalization and lateralization rules in Korean deeply influence on the English production data. Korean speakers need to be taught not to over-apply Korean phonological rule to English production for accurate pronunciation.

• 대한음성학회지:말소리
• /
• 제21_24호
• /
• pp.3-24
• /
• 1992

This study was designed to investigate the changes of phonological processes in normal Korean children aged from 2- to 6-years. Forty eight children who lived in Seoul or Kyung-Ki do were tested with a picture articulation test and their articulation errors including omissions, additions and substitutions were coded into phonological processes. Those phonological processes were discussed in several ways: syllable structure, place, manner, assimilation, tenseness, and aspiration of sounds. Data were analyzed by two ways: (1) number of subjects who showed each process and (2) percentage of occurrence of each process. Analyses in omission-addition processes demonstrated that postvocalic omission occurred most frequently, followed by velar-, alveolar-, and glottal omission. Analyses in substitution processes showed that fronting (palatal and velar), backing (alveolar), and alveolization occurred most frequently in terms of the place of sounds. In terms of assimilation, alveolar-, stopping, and aspiration assimilation occurred frequently. Analyses by the tenseness and aspiration showed similar occurrences among the 4 processes, with slightly higher occurrences in tensing and aspiration than lanxing and deaspiration. All of the processes decreased by age. The numbers of the processes showed by more than half of the children or exceeded 10％ of occurrence were 20 in 2-years of age, 10 in 3-years of age, 1 in 4-years of age, and none in ages of 5 and 6.