• 제목/요약/키워드: vocal characteristics

검색결과 194건 처리시간 0.02초

Comparison of Clinical Characteristics Between Patients With Different Causes of Vocal Cord Immobility

  • Kim, Min-Hyun;Noh, Junsoo;Pyun, Sung-Bom
    • Annals of Rehabilitation Medicine
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    • 제41권6호
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    • pp.1019-1027
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    • 2017
  • Objective To analyze the clinical characteristics between neurogenic and non-neurogenic cause of vocal cord immobility (VCI). Methods The researchers retrospectively reviewed clinical data of patients who underwent laryngeal electromyography (LEMG). LEMG was performed in the bilateral cricothyroid and thyroarytenoid muscles. A total of 137 patients were enrolled from 2011 to 2016, and they were assigned to either the neurogenic or non-neurogenic VCI group, according to the LEMG results. The clinical characteristics were compared between the two groups and a subgroup analysis was done in the neurogenic group. Results Among the 137 subjects, 94 patients had nerve injury. There were no differences between the neurogenic and non-neurogenic group in terms of demographic data, underlying disease except cancer, and premorbid events. In general characteristics, cancer was significantly higher in the neurogenic group than non-neurogenic group (p=0.001). In the clinical findings, the impaired high pitched 'e' sound and aspiration symptoms were significantly higher in neurogenic group (p=0.039 for impaired high pitched 'e' sound; p=0.021 for aspiration symptoms), and sore throat was more common in the non-neurogenic group (p=0.014). In the subgroup analysis of neurogenic group, hoarseness was more common in recurrent laryngeal neuropathy group than superior laryngeal neuropathy group (p=0.018). Conclusion In patients with suspected vocal cord palsy, impaired high pitched 'e' sound and aspiration symptoms were more common in group with neurogenic cause of VCI. Hoarseness was more frequent in subjects with recurrent laryngeal neuropathy. Thorough clinical evaluation and LEMG are important to differentiate underlying cause of VCI.

병적인 소리 떨림증과 소리꾼 떨림증의 음향학적인 비교연구 (The comparative Study of the Acoustic Representation between Pansori singer's and Spasmodic dysphonia patient's Voice)

  • 홍기환;김현기;이진국;조재식
    • 대한음성학회:학술대회논문집
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    • 대한음성학회 2007년도 한국음성과학회 공동학술대회 발표논문집
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    • pp.143-145
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    • 2007
  • Muscle groups that are located in and around the vocal tract can produce audible changes in frequency and/or intensity of the voice. Vocal vibrato is a characteristic feature in the singing of performers trained in the western classical tradition and vibrato is generally considered to result from modulation in frequency amplitude and timbre. Vocal tremor is also characterized by periodic fluctuations in the voice frequency or intensity and vocal tremor is symptom of a neurological disease as Spasmodic dysphonia , Parkinson's disease. Vocal vibrato and Vocal tremor may have many of the same origins and mechanisms in the voice production systems. The purpose of this study is to find acostic character of Korean traditional song Pansori singer's vibrato and Spasmodic dysphonia patient's vocal tremor. twelve Pansori singers and seven Spasmodic dysponia patients participated to this study. Power spectrum and Real time Spectrogram are used to analyze the acoustic characteristics of Pansori singing and Spasmodic dysphonia patient's voice The results are as follows; First, vowel formant differences between Pansori singing and Spasmodic dysphonia patient's voice are higher F1, F3. Second, The vibrato rate show differences between Pansori singing and Spasmodic dysphonia patients;$4^{\sim}6/sec$ and $5{\sim}6/sec$ Vibrato rate of pitch is 5.7 Hz ${\sim}$ 42.4 Hz for Pansori singing , 3.8 Hz ${\sim}$ 27.9 Hz for Spasmodic dysphonia patients ;Vibrato rate of intensity range is 0.07 dB ${\sim}$ 8.26 dB for Pansori singing and 0.07 dB ${\sim}$ 4.81 dB for Spasmodic dysphonia patients

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성대마비 197례에 대한 임상적 고찰 (A Clinical Study on 197 Cases of Vocal Cord Paralysis)

  • 박영학;최지영;정현철;이석은;김민식;조승호
    • 대한후두음성언어의학회지
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    • 제17권2호
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    • pp.138-142
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    • 2006
  • Objectives : Vocal cord paralysis(VCP) is a complex disorder which may result from numerous causes. We reviewed and analyzed the trend of clinical characteristics and causes of VCP in Korean patient. Method : A total 197 patients with VCP who visited St.Mary's hospital from March, 2000 to August, 2006 were reviewed retrospectively. They were analyzed according to sex, age, cause of VCP, position of paralyzed vocal fold, treatment methods. Results : The male and female ratio was 1.6 : 1. The unilateral paralyzed vocal fold was fixed at paramedian position in 84% of the cases. The left vocal fold was paralyzed about 2 1/2 times as much as the right vocal fold. Among the causes of VCP 30.9% of the cases were due to postoperative paralysis, and most of those were developed after lung, mediastinal surgery. laryngeal EMG was performed in 47 patients for determines the prognosis and treatment method. In the unilateral VCP, 90 patients were treated with injection laryngoplasty, 21 patients were performed thyroplasty type I. Conclusion : The causes of VCP include various diseases, so, detection of the primary disease is very important, because many fatal diseases are included among the primary diseases, and late detection can cause serious problems. VCP is not only a disease entity in itself, but can be seen as a sign of an underlying disease.

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후두질환에 따른 자음의 음성발현시간의 특성 (The Characteristics of Voice Onset Time of the Korean Stops in the Benign Laryngeal Disorders)

  • 홍기환;이화욱;김진성;이은정;소상수;최동일;양윤수
    • 대한후두음성언어의학회지
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    • 제17권2호
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    • pp.98-102
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    • 2006
  • Background and Objectives : Voice onset time(VOT) is defined as the time interval from oral release of a stop consonant to the onset of glottal pulsing in the following vowel. VOT is a temporal characteristics of stop consonants that reflects the complex timing of glottal articulation relative to supraglottal articulation. Stop consonants are characterized by creation of a pressure difference across a complete occlusion in the vocal tract, followed by a sudden release 'burst' due to opening that occlusion. The objects of this study is to evaluate a usefulness of voice onset time in the assessment of voice disorderd patients. Subjects : Subjects were 20 adults with normal voice and with benign laryngeal disorders. Subjects with voice disorders represented the following vocal pathologies : vocal polyp, vocal nodule, Reinke's edema and unilateral vocal fold paralysis(UVFP). Control subjects were matched for age (21-40 yews old) and sex(male) with the voice disorders subjects and had normal vocal qualities with no history of voice disorders. Methods : Each voice-disordered and matched control subject read the test passages containing three types of Korean bilabial consonants. VOT measures were made for the initial $/p/p^h/\;and\;/p'/$. VOT was measured using acoustic waveform or wide band spectrogram. Results : For each voiceless stop consonants, there was a significant difference in VOT between the voice disordered and normal subjects. The mean VOTs of the lax stops in UVFP was significantly shorter than those of control subjects in the UVFP. The mean VOTs of the aspirated stops in the vocal polyp and nodule were longer than those of control subjects, but not significant. The mean VOTs of the glottalized in voice disordered groups were longer than those of control subjects, and significant statistically in the UVFP. Conclusions : VOT may be a clinically useful acoustic parameter in the assessment of voice disordered patients, especially in the unilateral vocal fold paralysis.

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우울증 화자 음성의 음향음성학적 특성 (Vocal acoustic characteristics of speakers with depression)

  • 백연숙;김세주;김은연;최예린
    • 말소리와 음성과학
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    • 제4권1호
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    • pp.91-98
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    • 2012
  • The purposes of this paper is to study the characteristics of compared to the speakers voice without depression and speakers with depression, and to propose a objective method for the measurement of the therapeutic effects as well as for diagnostics of depression based on the characteristics. The voice samples obtained from 11 female speakers with depression, aged from 20 to 40, diagnosed as having major depressive disorder by an psychiatrist were compared with those from 12 normal controls with matched sex, age, height, weight, education, smoking, and drinking. The voice samples are taken by a portable digital recorder(TASCAM DR-07, Japan) and analysed using the MDVP(Multi-Dimentional Voice Program) software module from CSL(Computerized Speech Lab, kay elemetrics, co, model 4100). The result of the investigation are as following. First, the average speaking fundamental frequency and loudness range of the speakers with depression group was statistically significantly lower than that of the control group. The pitch range of the control group was rather higher than that of the speakers with depression group, but without statistical significance. Overall speech rates have no statistical difference between two groups. Second, the average speaking fundamental frequency and loudness range have statistically significant negative correlation with Beck Depression Inventory, i. e. more severe depression exhibits lower average speaking fundamental frequency and loudness range. Other vocal parameters such as pitch range and overall speech rate have no statistically meaningful correlations with Beck Depression Inventory.

발화조건에 따른 기본주파수 및 음성강도 변동의 특징 (Variance characteristics of speaking fundamental frequency and vocal intensity depending on utterance conditions)

  • 이무경
    • 말소리와 음성과학
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    • 제4권1호
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    • pp.111-118
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    • 2012
  • The purpose of this study was to characterize and determine variances of speaking fundamental frequency and vocal intensity depending on gender and three utterance conditions (spontaneous speech, reading, and counting). A total of 65 undergraduate students (32 male students, 33 female students) attending universities in Daegu, South Korea participated in this study. The subjects were all in their 20s. This study used KayPENTAX's Visi-Pitch IV (Model 3950) to measure the variances of speaking fundamental frequency (SFF0) and vocal intensity (VI). As a result, this study came to the following conclusions. First, it was found that both males and females showed no significant difference in SFF0 and vocal intensity among three utterance conditions. Second, this study sought to analyze differences in the variances of SFF0 between males and females. As a result, it was found that females showed significantly higher levels of four measured variances (SFF0 $SD^{**}$, SFF0 $range^{***}$, Min $SFF0^{***}$ and Max $SFF0^{***}$) than males on spontaneous speech. However, it was found that there was no significant difference between males and females in SFF0 range on reading or in SFF0 SD and SFF0 range on counting. It was found that there was no significant difference between males and females in the level of measured variances of vocal intensity depending on utterance conditions. Finally, this study made a comparison and analysis on differences in the variances of SFF0 and vocal intensity among utterance conditions. As a result, it was found that all the measured variances of SFF0 in males were most significantly reduced depending upon spontaneous speech which was followed by reading and counting respectively (SFF0 SD: p<.001, SFF0 range: p<.05, Max SFF0: p<.05). Females however, show no significant difference in the measured variances of SFF0 depending upon three utterance conditions. It was also found that the measured variances of vocal intensity in females were most significantly reduced depending on spontaneous speech that was followed by reading and counting (VI SD: p<.001, VI range: p<.001, Min VI: p<.01 Max VI: p<.05), while males showed no significant difference in the measured variances of vocal intensity depending on three utterance conditions. In sum, these findings suggest that variances of SFF0 in males are affected by three utterance conditions, while variances of vocal intensity in females are affected by three utterance conditions.

교사 및 성악가의 VHI, V-RQOL, 음향학적 특성 비교 (VHI, V-RQOL, and vocal characteristics of teacher and singer)

  • 홍주혜;황영진
    • 한국산학기술학회논문지
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    • 제13권7호
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    • pp.3048-3056
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    • 2012
  • 본 연구의 목적은 교사 및 성악가에 대한 음성장애지수(VHI), 음성관련 삶의 질 평가(V-RQOL), 음향음성학적 평가에 대한 특성을 연구하였다. 본 연구는 56명(성대결절이 있는 교사 20명 및 성악가, 그리고 정상화자 16명)을 대상으로 하였다. 모든 대상자에게 VHI, V-RQOL를 평가하였고, 음향학적 평가는 CSL 4500(Kay Pantax, USA)으로 측정하였다. 21명의 대상자에게 VHI, VRQOL, CSL을 이용한 음향적 평가에 대한 검사-재검사를 위해 두 번 실시하였다. 본 연구의 자료처리는 SPSS 18.0(SPSS Inc, Chicago, IL)을 사용하였다. 본 실험 결과, VHI 및 V-RQOL 결과, 교사 및 성악가 집단의 신체적, 기능적, 정서적 점수가 정상집단에 비해 유의하게 높았다(p<0.05). 음향학적 특성은 기본주파수 관련 변수, 기본주파수 변이 관련 변수, 음성강도 변이 관련 변수, 잡음 관련 변수, 진전 관련 변수) 범주에서 실험집단이 정상집단에 비해 유의하게 높았다(p<0.05). 결론적으로 교사 및 성악가들은 신체-기능영역에서 자신의 음성문제를 심각하게 인식하는 것 같다.

Geographic variation in the acoustic signals of black-billed magpies (Pica pica) in South Korea and Japan

  • Lee, Sang-Im;Lee, Sun-Hee;Nam, Hyun-Young;Choe, Jae-Chun
    • Journal of Ecology and Environment
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    • 제34권2호
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    • pp.167-174
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    • 2011
  • Black-billed magpies (Pica pica) are a highly sedentary species due to their short and round wings, which are not adequate for long distance flights. We investigated geographic variation in the vocal signals of magpies residing in South Korea and Japan (subspecies sericea). Based on the magpie's limited dispersal ability, we predicted that the variation in vocal signals of black-billed magpies could be explained by geographic barriers such as mountain ranges and straits. We analyzed four-syllable chatter calls of magpies from five localities in South Korea, which are separated by mountain ranges (Seoul, Daejeon, Daegu, Gwangju, and Busan), and two island localities separated from the mainland by straits (Jeju in Korea and Saga in Japan). We found significant differences in the characteristics of magpie chatter calls recorded in the seven localities, and the variation pattern was independent among the variables. Mainland-island differentiation and north-south differentiation were observed. In general, magpies on Saga were the most distinctive. North-south differentiation was observed among the Korean mainland localities. However, the pattern was not related to the presence of putative geographic barriers. We hypothesize that the patterns of geographic variation in the structure of magpie chatter calls residing in South Korea might have been shaped by a sudden expansion of magpies followed by low level of local isolation, which may have led to vocal differentiation. Along with elucidating the vocal environment of Korean magpie populations, more extensive sampling is needed to clarify the functional aspects of geographic variation in the vocal signals of Korean magpies.

성대돌기 육아종의 수술적 치료 (Surgical Treatment of Vocal Cord Granuloma)

  • 유명상;송형민;노종렬;최승호;김상윤;남순열
    • 대한후두음성언어의학회지
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    • 제17권1호
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    • pp.49-52
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    • 2006
  • Background and Objectives: Vocal cord granuloma is a exophytic inflammatory mass and caused by gastroesophageal reflux, voice abuse, endotracheal intubation. There has been a controversy in the treatment of vocal cord granuloma. Our aim of study is to know the clinical characteristics and the results of surgical management for vocal cord granuloma. Materials and Methods: We have reviewed and analyzed medical records of 55 patients who were diagnosed and surgically treated as vocal cord granuloma in Asan medical center from 1997 to 2005 retrospectively. Results: 25 cases were intubation granuloma and 30 cases were contact granuloma. In intubation granuloma, the clinical manifestation was hoarseness(70%), foreign body sensation(44%), chronic cough(21%). In contact granuloma, the clinical manifestation was hoarseness(67%), foreign body sensation(60%), throat clearing(21%). The recurrence rate after surgery was 8% in intubation granuloma and 33% in contact granuloma. Mean recurrence time was 4.1months in intubation granuloma and 3.2months in contact granuloma. Conclusion: Although there is no significant difference, recurrence rate after surgery was high in contact granuloma compared to intubation granuloma(p=0.125). Although this study is retrospective, surgical management must be considered in resolving diagnostic doubt, treating airway obstruction, and failure in conservative treatments.

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발성방법에 따른 소프라노 성악도의 음성 특성 (The characteristics of soprano students' voice related to the vocal methods)

  • 김정택;성철재
    • 말소리와 음성과학
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    • 제9권3호
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    • pp.75-83
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    • 2017
  • The purpose of this study is to find clues to the risk of voice disorders in soprano students. The subjects of the study were 17 soprano students and 18 general students (women). The phonation of vowels /a/, /i/, and /u/ with C4 and F4 notes in each group were recorded. Then, only soprano students were made to record their classical vocalization containing vibrato. Formant, formant energy, bandwidth, VAI (vowel area index), VSA (vowel space area) and L/H ratio were analyzed. There was significant difference in F3 such that the singers' note was measured around 3 kHz which seems to be 400 Hz higher than one from general students. But, There was no significant difference in L/H ratio between soprano student and the general student. There was a significant difference in F3 in the comparison of the soprano students' two vocalization methods. Classical vocalization was measured at 200Hz higher than sustained phonation in F3. Vocal tract adjustment was made and vowel space changed, but there was no significant difference in F3 energy, which is the index of singers' formant according to the phonation method. The L/H ratio, which can be a direct indicator of vocal effort, has no difference in phonation method and is lowered in all phonation methods as the pitch increases. C4 and F4 pitches are lower than the singing range of the soprano. When the pitch changes, vocal effort increases like a general student which will be an indicator of the risk of vocalization. This will be a clue to the vocalization of the immature soprano student.