• Title, Summary, Keyword: Nasometer

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Influence of Nasometer Structure on Nasalance for Speech Therapy (언어치료환자를 위한 비음측정기 모듈의 구조가 비음치 산출에 미치는 영향)

  • Woo, Seong Tak;Park, Y.B.;Kim, J.Y.;Oh, D.H.;Ha, J.W.;Na, S.D.;Kim, M.N.
    • Journal of Korea Multimedia Society
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    • v.22 no.2
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    • pp.157-166
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    • 2019
  • With the development of medical technology, interest in rehabilitation devices is increasing and various devices are being studied. In particular, devices for speech disorders such as hearing impairment and cleft palate are attracting attention. In general, the nasometer is used for patients with flaccid dysarthria and velopharyngeal incompetence(VPI). However, in the case of the conventional separator type nasometer, that has an acoustic feedback problem between the oral and nasal sounds. In recent, the mask type nasometer has been developed which is insensitive to acoustic feedback. But, still not popularized. In this paper, the nasometer characteristics of the conventional separation type and mask type are analyzed. Also, We were obtained clinical acoustic data from the 6 subjects and examined the significant differences in the structure of the separation type and mask type nasometer. Through experiments, it was confirmed that the measurement was about 3~15% higher in the mask type nasometer than the conventional nasometer having a separator type. Also, We was considered the necessity of nasometer signal processing for acoustic feedback reduction and nasalance calculation optimization.

Significance of Nasometer and First Formant for Nasal Patency After Septoplasty and Turbinoplasty (비중격 성형술 및 하비잡개 절제술 후 비개존도 측정을 위한 Nasometer와 제1포만트 측정의 유용성)

  • 진성민;강현국;이경철;박상욱;이성채;이용배
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.8 no.2
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    • pp.161-165
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    • 1997
  • Background : The rhinomanometry and acoustic rhinometry can assess e nasal passage dynamically and statically Recently, analytic methods such as nasometer and sound spectrogram are gaining wide attention to evaluate the nasality objectively. Objectives : firstly to determine if ere was a relationship between the new methods and nasal airway resistance, and secondly to establish if the measurement of nasalance and sound spectrum could be used as an alternative to rhinomanometry and acoustic rhinometry. Materials and Methods : Thirty two patients who underwent either septoplasty and turbinectomy for nasal obstruction were studied. And their ages ranged form 15 to 45 years, with an average of 26.1 years. The rhinomanometry, nasometer, sound spectrogram were performed at preoperative and postoperative 4 weeks day. Results : After operation, subjective symptoms and rhinomanometric results were significantly improved but nasalance and slope of nana, mama and mamma passage had not meningful change. The significnat changes were noted in nasalance and first nasal formant frequency of nasal consonant of velum(angang). Conclusion : Nasometer and sound spectrogram had a limitation for the measure of nasal patency.

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Assessment and Treatment of the Cleft Palate Speech Disorder by Use of the Nasometer (비음측정기를 사용한 구개열 언어의 평가 및 치료)

  • Shin, Hyo-Keun;Leem, Dae-Ho;Whang, Sang-Jun;Kim, Dong-Chil;Kim, Hyun-Gi
    • Korean Journal of Cleft Lip And Palate
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    • v.11 no.1
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    • pp.1-12
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    • 2008
  • In cleft palate patient, characteristic of speech disorder is the resonance disorder result from velopharyngeal incompetence. Clinically VPI caused by congenital factor as congenital palatal incompetence, submucosal cleft palate, and caused by acquired factor as CNS damage, tumor, palatal palsy. The clinicians more concerned about the speech disorders after cleft palate surgery rather than language pathologist. The resonance disorder devided for hypernasality, hyponasality and nasal emission, but as a rule, hypernasality is typical phenomenon of the resonance disorder. Traditionally clinicians and language pathologists evaluated four-stage or five-stage of hypernasality by subjective assessment. Although language pathologist is well-trained, results of the language level should be different. In late 1980s, Kay Elemetrics Corp. developed nasometer that objective nasalance identified with well-trained language pathologist and originate from nasometer Tonar I and II were developed by Fletcher. Therefore objective nasalance test was possible, the nasometer used in hospital, collage and speech clinic both and home and abroad. Standardization of the cleft palate speech assessment must be settled without delay because of different character result in different language and different assessment results by dialect in same language. In our study, we provide the data base for the standardization of cleft palate speech assessment which through report of objective assessment method, speech therapy effects and problems result in interdisciplinary teamwork by nasometer use in treatment of cleft palate patient.

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Study of Nasalance for Normal Korean Adults using Nasometer II (비음측정기를 사용한 정상 성인의 비음도에 관한 연구)

  • Kim, Seong-Il;Baik, Jin-Ah;Shin, Hyo-Keun;Kim, Oh-Hwan
    • Speech Sciences
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    • v.7 no.3
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    • pp.219-228
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    • 2000
  • Assessment of speech nasality provides important information for the treatment of velopharyngeal incompetence. Objective procedures may be used to assess velopharyngea1 function, in examples Nasometer, Aerodynamics, x-ray, Electromyography, Nasoendoscopy and Videofluoroscopy etc. The aim of this study was to obtain comprehensive nasalance data for Korean adults, aged 20 years and to investigate any gender differences within that age group using Nasometer II. The results were as follow: (1) The nasalance of the vowels(/a/, /i/, /e/, /o/, /u/, /ja/, /je/, /wi/) in the group of adults was higher in females than in males (p<0.05). (2) The nasalance of the plosives (/p/, /$p^h$/, /p'/, /t/, /$t^h$/, /t'/, /k/, /$k^h$/, /k'/) in the group of adults was higher in females than in males (p<0.05). (3) The nasalance of the affricatives (/c/, /$c^h$/, /c'/) in the group of adults was higher in females than in males (p<0.05). (4) The nasalance of the fricatives (/s/, /s'/, /$\int$/) in the group of adults was higher in female than in males (p<0.05). (5) There was no statistically significant effect for the nasalance of nasal consonants (/m/, /n/, /$a{\eta}$/).

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A Study of Nasalance for Normal Korean Children Using Nasometer II (정상 소아의 비음도에 관한 연구)

  • Kim, Seong-Il;Jo, Sang-Ki;Ko, Seung-O;Shin, Hyo-Keun
    • Speech Sciences
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    • v.7 no.4
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    • pp.73-82
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    • 2000
  • The perceptual judgement of nasality is still used in the assessment of velopharyngeal incompetence, but it should not be the sole criterion for speech nasality. Objective procedures may be used to assess velopharyngeal function, for example, nasometer, aerodynamics, x-ray, electromyography, nasoendoscopy, and videofluoroscopy can be utilized. The nasometer employs noninvasive measurement methods and measures with high levels of accuracy. The aim of this study was to obtain comprehensive nasalance data for Korean children, aged 7 years, and to investigate any gender differences within that age group. The results were as follow: 1. Statistically, gender has no significant effect on the nasalance of vowels /a/, /i/, /o/, /u/, /je/, /wi/) but the nasalance of the vowels /e/, /ja/) was higher in males (p<0.05). 2. There was no statistically significant effect of gender in plosives /p/, /ph/, /p'/, /t/, /th/, /t'/, /k/, /kh/, /k'/), affricatives /c/, /ch/, /c'/), and fricatives /s/, /s'/, /$\int$/). 3. The nasalance of the nasal consonants, /m/, /n/, /an/) is higher in males and only /n/, /an/ were statistically significant (p<0.05).

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Speech treatment of velopharyngeal insufficiency using biofeedback technique with NM II; A case report (Nasometer 활용 바이오피드백 기법을 이용한 비인강폐쇄전환자의 치험 사례)

  • Yang Ji-Hyung;Choi Jin-Young
    • Korean Journal of Cleft Lip And Palate
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    • v.8 no.1
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    • pp.45-52
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    • 2005
  • Velopharyngeal Insufficiency(VPI); the failure of velum, the lateral wall and the posterior pharyngeal wall to separate the nasal cavity from pharyngeal cavity during speech, can be caused by congenital conditions include cleft palate, submucous cleft palate and congenital palatal insufficiency. Speech problems of VPI are characterized by hypernasality, nasal air emission, increased nasal air flow and decreased intelligibility. These speech problems of VPI can be treated with the surgical procedure, the application of temporary prosthesis and speech therapy. Biofeedback technique with Nasometer is a speech treatment method of VPI that commonly used as one component of a comprehensive procedure for improvement of speech in patients with VPI. In this article describes a case of VPI treated by biofeedback technique with Nasometer; which showed satisfactory result in nasalance and formant analysis after the speech therapy during 9 months.

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A Study of Nasalance for Normal Korean Children using Nasometer II (정상 소아의 편도 형태에 따른 비음도에 관한 연구)

  • Kim Seong-Il;Jo Sang-Ki;Ko Seung-O;Shin Hyo-Keun
    • Korean Journal of Cleft Lip And Palate
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    • v.3 no.2
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    • pp.51-60
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    • 2000
  • Assessment of speech nasality provides important information for the treatment of velopharyngeal incompetence. The perceptual judgement of nasality is still used in assessment of velopharyngeal incompetence, but it should not be the sole criterion for speech nasality. Objective procedures may be used to assess velopharyngeal function, in examples nasometer, aerodynamics, x-ray, electromyography, nasoendoscopy and videofluoroscopy etc, The aim of this study was to obtain comprehensive nasalance data for the Korean children, aged 7 years and to investigate any tonsil differences within that age group. The results were as follow: The nasalance of the children in respect of the tonsil was higher in grade III than grade I in vowels (/i/, /u/, /wi/), plosives (/p'/, /t'/, /k'/), affricatives (/c'/) and fricatives (/s/, /∫/). (p<0.05)

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The Speech of Cleft Palate Patients using Nasometer, EPG and Computer based Speech Analysis System (비음 측정기, 전기 구개도 및 음성 분석 컴퓨터 시스템을 이용한 구개열 언어 장애의 특성 연구)

  • Shin, Hyo-Geun;Kim, Oh-Whan;Kim, Hyun-Gi
    • Speech Sciences
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    • v.4 no.2
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    • pp.69-89
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    • 1998
  • The aim of this study is to develop an objectively method of speech evaluation for children with cleft palates. To assess velopharyngeal function, Visi-Pitch, Computerized Speech Lab. (CSL), Nasometer and Palatometer were used for this study. Acoustic parameters were measured depending on the diagnostic instruments: Pitch (Hz), sound pressure level (dB), jitter (%) and diadochokinetic rate by Visi-Pitch, VOT and vowels formant ($F_1\;&\;F_2$) by a Spectrography and the degree of hypernasality by Nasometer. In addition, Palatometer was used to find the lingual-palatal patterns of cleft palate. Ten children with cleft palates and fifty normal children participated in the experiment. The results are as follows: (1) Higher nasalance of children with cleft palates showed the resonance disorder. (2) The cleft palate showed palatal misarticulation and lateral misarticulation on the palatogram. (3) Children with cleft palates showed the phonatory and respiratory problems. The duration of sustained vowels in children with cleft palates was shorter than in the control groups. The pitch of children with cleft palates was higher than in the control groups. However, intensity, jitter and diadochokinetic rate of children with cleft palates were lower than in the control group. (4) On the Spectrogram, the VOT of children with cleft palates was longer than control group. $F_1\;&\;F_2$ were lower than in the control group.

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The comparative study of resonance disorders for Vietnamese and Korean cleft palate speakers using nasometer

  • Shin, Yu-Jeong;Kim, Yongsoo;Kim, Hyun-Gi
    • Maxillofacial Plastic and Reconstructive Surgery
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    • v.39
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    • pp.9.1-9.5
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    • 2017
  • Background: Nasalance is used to evaluate the velopharyngeal incompetence in clinical diagnoses using a nasometer. The aim of this study is to find the nasalance differences between Vietnamese cleft palate children and Korean cleft palate children by measuring the nasalance of five oral vowels. Methods: Ten Vietnamese cleft palate children after surgery, three Vietnamese children for the control group, and ten Korean cleft palate children after surgery with the same age participated in this experimentation. Instead of Korean control, the standard value of Korean version of the simplified nasometric assessment procedures (kSNAP) was used. Result: The results are as follows: (1) the highest nasalance score among the Vietnamese normal vowels is the low vowel /a/; however, that of Korean normal vowels is the high vowel /i/. (2) The average nasalance score of Korean cleft palate vowels is 18% higher than that of Vietnamese cleft palate vowels. There was a nasalance score of over 45% among the vowels /e/ and /i/ in Vietnamese cleft palate patients and /i/, /o/, and /u/ in Korean cleft palate patients. Conclusion: These different nasalance scores of the same vowels seem to cause an ethnic difference between Vietnamese and Korean cleft palate children.

A Comparsion study of Phonation Threshold Pressure and Nasalance according to vowels (모음에 따른 발성역치압력과 비성도 특성 비교 연구)

  • Lee, Inae;Hwang, Young-Jin
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.14 no.2
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    • pp.721-727
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    • 2013
  • This study sought to compare the difference of Phonation Threshold Pressure and Nasalance according to vowels. We tested 28 normal females(20~30age) who be in attendance at a school from May to August 2012. We measured Phonation Threshold Pressure through PAS(Phonatory aerodynamic system, model 6600, KAY electronics, Inc) that aero-mechanical instrument called. Phonation Threshold Pressure was measured by using the consonant /p/ and the three vowels /a, i, u/ and was analyzed the three times of Phonation the five times. Also We measured Nasalance through the Nasometer${\Pi}$(model 6450, KAY electronics, Inc). The vowel's phonation was recored by using the three vowels /a, i, u/. the nasalance score was measured via Nasometer. As a Result, Phonation Threshold Pressure according to three vowels show significantly difference. Also, Nasalance according to three vowels show significantly difference. Finally, Correlation coefficient of Phonation Threshold Pressure and Nasalance according to three vowels show positive relation ship. Therefore Phonation Threshold Pressure and Nasalance according to three vowels have closely relationship.