• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• 제16권2호
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• pp.118-122
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• 2005

Background and Objectives The compensatory articulation not only influences general speech intelligibility, but also prevents precise assessment of the velopharyngeal function. This study was performed to investigate frequently affected phonemes, prevalence and the characteristics of compensatory articulation in the patients with cleft palate having velopharyngeal insufficiency. Material and Method An archival review was taken on 103 cleft palate subjects. Their age ranged from 2.6 to 63 years (mean age of 9.8 years). They were grouped into two : preschool group (n=71) and older patient group (n=32). The prevalence and patterns of compensatory articulation were examined on oral high pressure consonants such as plosives, fricatives and affricates. Results : Compensatory errors were observed in $49.5\%$ of the subjects and were mostly glottal stops with the exception of 4cases who had pharyngeal fricatives in addition to glottal stops. The most frequently substituted phonemes were velar plosives and tense sound. There was no significant difference of prevalence in both groups. However, errors for bilabial and alveolar plosives were more frequently observed in preschool group. Conclusion High prevalence of compensatory articulation observed in both preschool and older age group indicates that their articulation errors tend to remain unless appropriate speech therapy is provided. To improve speech intelligibility of the patients with cleft palate having velopharyngeal insufficiency, it is advisable to address and correct the compensatory articulation errors in their earlier ages.

• Speech Sciences
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• 제11권1호
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• pp.65-72
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• 2004

The force of articulation is different between voiced and voiceless consonants in the binary opposition system. However, the Korean voiceless stop consonants have a triple opposition system: lenis, aspirated, and glottalized. The aim of this study is to find the primary distinctive feature between the force of articulation and the aspiration for the three different types of Korean stops. Two native speakers of the Seoul dialect participated to this study. The corpus was composed of less than eight syllabic words containing consonants in word-initial position and intervocalic position. Radiocinematography and Mingography were used to analyze the articulatory tension and acoustic characteristics. Korean stops have independent features of articulatory tension and aspiration, in which the indices are different according to position. However, in this system which does not have the opposition of sonority, the force of articulation is the primary distinctive feature and the feature of aspiration is subsidiary.

• Speech Sciences
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• 제10권2호
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• pp.281-285
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• 2003

An EPG study was conducted to examine the place of articulation of Korean lenis affricate /c/. Results indicated that the place of articulation of the stop portion /t/ of /c/ was shifted to the place of articulation of the fricative portion /s/ of /c/. Also, we found that the shifting in the place of articulation occurred because of the gap of the place of articulation between /t/ and /s/ (two portions of /c/). From this study, we proposed that the /e/ is articulated at the same place of articulation of /s/ both for its stop portion and its fricative portion. Also, we observed that the place of articulation of /t/ is articulated farther front than that of /s/ and /c/.

• Phonetics and Speech Sciences
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• 제7권2호
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• pp.19-28
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• 2015

This study investigated final consonant error characteristics at word-medial position in children with functional articulation disorder. Data was collected from 11 children with functional articulation and 11 normal children, ages 4 to 5. The speech samples were collected from a naming test. Seventy-five words with every possible bi-consonants matrix at the word-medial position were used. The results of this study were as follows : First, percentage of correct word-medial final consonants of functional articulation disorder was lower than normal children. Second, there were significant differences between two groups in omission, substitution and assimilation error. Children with functional articulation disorder showed a high frequency of omission and regressive assimilation error, especially alveolarization in regressive assimilation error most. However, normal children showed a high frequency of regressive assimilation error, especially bilabialization in regressive assimilation error most. Finally, the results of error analysis according to articulation manner, articulation place and phonation type of consonants of initial consonant at word-medial, both functional articulation disorder and normal children showed a high error rate in stop sound-stop sound condition. The error rate of final consonant at word-medial position was high when initial consonant at word-medial position was alveolar sound and alveopalatal sound. Futhermore, when initial sounds were fortis and aspirated sounds, more errors occurred than linis sound was initial sound. The results of this study provided practical error characteristics of final consonant at word-medial position in children with speech sound disorder.

• Speech Sciences
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• 제7권3호
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• pp.229-247
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• 2000

The purpose of this study is to examine the improvement effect of articulation of the fricative consonant /s/(ㅅ), when applying the Articulation Modification Program (AMP) to hearing disordered students. Three hearing disordered students were selected for this study by the consonant picture and Korean Articulation Sentence tests. They have no defect in their emotion, behavior and sight. This program applied the multiple baseline design across subjects to examine the improvement effect of articulation of fricative consonant /s/(ㅅ). Also I designed th$\sim$s program with an advanced pre-test and post-test in order to research the improvement difference of articulation by articulation position and language unit. It was executed 32 sessions over three months, four sessions a week, one session taking forty minutes. The results according to the study subject are as follow; First, as result of AMP, articulation of all students was developed after applying this program. Second, as result of AMP, articulation in fore-word was one-hundred percent efficiency and articulation in middle-word was 97.7% efficiency by position. Third, as result of AMP, articulation in the word reached 98.7% efficiency, in phrase 97.7% efficiency, in the sentence 97.7% efficiency and in the story was 98.3% efficiency by language unit.

• Proceedings of the KSPS conference
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• 대한음성학회 1996년도 10월 학술대회지
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• pp.421-425
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• 1996

A multimedia Version of ${\ulcorner}Lee-Kim test of Korean Articulation{\lrcorner}$ "Lee-Kim Test of Korean Articulation" consisting of picture test, Sentence test, user's manual and notation, analysis sheets was published in 1990 to serve as a standard tool for testing and analysing the articulation errors of normal and abnormal speakers. It has been found, however that, the picture and sentences test using the printed version of Lee-Kim test of Korean Articulation revealed several limitations, in i, e, a) inefficiency in inducing desirable response from the informants b) lack of concentration and interest on the part of informants c) no consistent way of providing the informant with a clue in case the informant is unfamiliar with the word represented by the picture or the sentence. d) no reliable means for the speech-language pathologist to analyze and evaluate the informant's speech in relation to the standard pronunciation A multimedia version of Lee-Kim Korean articulation Test which features picture and word as well as recorded voice has been developed with a view to eliminating the limitation mentioned above and facilitating the articulation test-with ease and accuracy.

• MALSORI
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• 제61호
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• pp.1-14
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• 2007

The purpose of this study was to analyze the relationship between segmental correctness and speech intelligibility in adults with hearing impairment. Segmental correctness was measured by percentage of correct vowels(PCV) and percentage of correct consonants(PCC). The results were shown as follows: First, PCV and PCC could predict speech intelligibility with statistical significance. Second, in consonant classes divided by place and manner of articulation, the PCC of plosives and alveolar sounds were significant predicting variables in each group ($R^{2}=50%;\;59%$). According to this study, the importance of segmental correctness on speech intelligibility of adults with hearing impairment was confirmed. Also correctness of plosive sounds in manner and alveolar sounds in place were significant factors to speech intelligibility.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• 제10권2호
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• pp.140-148
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• 1999

The use of obturator is the prosthetic rehabilitation approach for restoration of the defected maxillary shape and function for the patients with palatal defect. The obturator can change the shape of vocal tract and nasality, but few reports on the effects of the change were presented. So, the authors performed the experimental study to compare the difference between the sizes of vowel triangles produced by maxillectomized patients before and after obturator-wearing and to consider how much improvement in speech intelligibility can be expected by obturator wearing. The 8 patients who were totally maxillectomized due to palatal cancer were participated as subjects. They produced 5 vowels(/a/, /i/, /u/, /e/, /o/) before and after obturator-wearing. The formants of the vowels were analyzed by the spectrogram of CSL, and their speech intelligibility were judged by normal 8 listeners. As results, the frequency of the first and the second formant showed no significant difference between the articulation before and after wearing, but the comparison of the sizes of vowel triangles, related with the speech intelligibility, showed significant difference. The vowel triangle of the articulation after wearing was larger than that of the articulation before wearing. /i/ showed the lowest speech intelligibility score among the vowel articulation before wearing. After wearing obturators, their scores increased on the whole, especially, in /a/, but the intelligibility of /u/ decreased after wearing.

• Speech Sciences
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• 제15권3호
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• pp.133-144
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• 2008

The present study examined multicultural family children's articulation accuracy and phonological process using Assessment of Phonology and Articulation for Children(APAC), and compared them with normally developing children. The subjects of this study were 24 multicultural family children between ages 3 years, 6 months and 3 years, 11 months. The multicultural family children's articulation accuracy was significantly lower than the normally developing children's. In case of the normally developing children, phonological processes the multicultural family children showed were observed at a younger age and did not appear at the age of the children participating in this study. The Japanese multicultural family children and the non Japanese multicultural family children showed different rate of the changes. This result shows that articulation development in the multicultural family children may be different among them according to the classification and that the children's error patterns are related to their mothers' native language. The results of this study are proposed to be applicable to articulation assessment and treatment.

• Speech Sciences
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• 제8권3호
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• pp.185-200
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• 2001

This study was designed to investigate the treatment, generalization, and maintenance effects of vocal relaxation treatment on compensatory articulation(i.e., glottalization of plosive sound) of three children with cleft palate. Multiple baseline design was applied to evaluate treatment, generalization, and maintenance effects. The targeted phonemes were ph/, th/, /t/ which Were frequently substituted by glottal stop sounds. The main component of the treatment program was vocal relaxation using humming and aspiration sound /h/. The following conclusions were deduced from the results: (1) the treatment program for compensatory articulation was effective in facilitating correct production of targeted phoneme and eliminating glottalization for all subjects, (2) the treatment effects on articulation accuracy were generalized to untreated phonemes (/c/, /c$c^{h}$/) for 2 subjects, (3) the treatment effects on decrease of glottalization were generalized to untreated phonemes for all subjects, and (4) the treatment effects were maintained for all subjects for 2 weeks after treatment was terminated.