• 대한기관식도과학회지
• /
• 제19권1호
• /
• pp.25-27
• /
• 2013

A 47-year-old man was referred for TEF. He underwent tracheostomy three months ago to maintain prolonged ventilator care. Computed tomography (CT) scan and fiberoptic examination showed bilateral vocal cord palsy with median fixation and about 2 inch sized long segmental tracheoesophageal fistula (TEF) tract along the necrotic cricoid and tracheal cartilages. Narrow field total laryngectomy was performed to remove devitalized cartilages and mucosa, and repair TEF. He discharged without complication except mild stenotic change of tracheal fenestration 19 days later.

• 한국음향학회:학술대회논문집
• /
• 한국음향학회 1991년도 학술발표회 논문집
• /
• pp.45-49
• /
• 1991

In area of the speech synthesis, the waveform coding with high quality are mainly used to the synthesis by analysis. However, it is difficult to applying the waveform coding to the synthesis by rule, because the parameters of this coding are not classified as either excitation parameters and vocal tract parameters. In this paper, we proposed a new pitch change method that can alter the pitch periods in the waveform coding. The proposed method expands the pitch period by the LPC synthesis method, and then the period is compressed by the waveform halving technique. Thus, it is possible that the waveform coding is carried out the synthesis by rule in speech processing.

• 대한기관식도과학회지
• /
• 제1권1호
• /
• pp.55-63
• /
• 1995

Gastroesophageal reflux is thought to be an important etiology of the various upper aerodigestive tract disease. To investigate the role of gastric acid and pepsin as an etiologic factor of laryngotracheal stenosis, and the difference of injury by synthetic gastric juice between in ciliated respiratory epithelium and in squamous epithelium, experimental study was carried out using rabbits. Mucociliary transport affected by synthetic gastric juice was also studied in dogs. Synthetic gastric juice of low pH caused serious damage and Impairment of mucociliary transport in the epithelium of the larynx and trachea. Gastric acid played major role in the mucosal damage. Squamous epithelium of vocal folds and pharynx was more resistant to synthetic gastric juice than respiratory epitheium. In conclusion, gastroesophageal reflux may be an etiologic factor in the developement of laryngotracheal stenosis, so the adequate management is necessory In patients of laryngotracheal stenosis.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제36권3호
• /
• pp.228-230
• /
• 2010

Sarcomatoid carcinoma is a rare and occurs mainly in the upper aerodigestive tract such as the oral cavity, esophagus and vocal cords. It is a unique variant of squamous cell carcinoma. We report the case of a patient with spindle cell squamous cell carcinoma involving the mandible. At initial examination, overlying mucosa of that lesion was normal appearance. One week later, that lesion showed ulcerative and bloody change and rapid growth in size. This case showed unpredictable rapid growth although rapid growth in size was suspected of undergoing malignancy.

• 음성과학
• /
• 제8권3호
• /
• pp.43-50
• /
• 2001

This paper deals with voice similarities between sisters who are supposed to have common physiological characteristics from a single biological mother. Nine pairs of sisters who are believed to have similar voices participated in this experiment. The speech samples obtained from one pair of sisters were eliminated in the analysis because their perceptual score was relatively low. The words were measured in both isolation and context, and the subjects were asked to read the text five times with about three seconds of interval between readings. Recordings were made at natural speed in a quiet room. The data were analyzed in pitch and formant frequencies using CSL (Computerized Speech Lab) and PCQuirer. It was found that data of the initial vowels are much more similar and homogeneous than those of vowels in other positions. The acoustic data showed that voice similarities are strikingly high in both pitch and formant frequencies. It is assumed that statistical data obtained from this experiment can be used as a guideline for modelling speaker identification and speaker verification.

• 음성과학
• /
• 제7권4호
• /
• pp.107-121
• /
• 2000

In this paper, I investigate the acoustic correlates of a vowel's coarticulatory dynamics manifested in preceding and following consonants along two dimensions of the vocal tract: place of articulation and degree of constriction. Two dimensional coarticulation is not necessarily executed either concomitantly or proportionally, and the modification induced by coarticulation with a vowel in CVC structures is merely restricted to the CV portion; that is, the prevocalic consonant is modified solely in its constriction location. This is consistent with the observation that C-to-V place assimilation does not accompany consonant lenition in phonology, which suggests that phonetic nature is effectively reflected in phonological patterns.

• Tuberculosis and Respiratory Diseases
• /
• 제70권1호
• /
• pp.63-68
• /
• 2011

Multiple symmetrical lipomatosis (MSL), also called Madelung's disease, is a rare disorder of unknown etiology and characterized by abnormal accumulation of large subcutaneous fatty masses in neck, shoulder, and upper trunk. MSL has known to predominantly affect middle-aged men with a history of alcoholism. Although the clinical course of MSL is considered to be slowly progressive, in advanced stage, fatty masses in the neck may compress the upper aerodigestive tract, resulting in dyspnea and dysphagia. The treatment of MSL is surgical resection, but radical excision is very difficult and recurrence after surgery is frequent. We report the case of 55-year-old man with long lasting MSL, which caused severe airway obstruction. This patient was admitted with progressive dyspnea and massive accumulation of fat around the vocal cord that was detected on a neck CT scan. This abnormal fatty infiltration in supraglottic region caused upper airway obstruction.

• 한국정보처리학회논문지
• /
• 제7권10호
• /
• pp.3119-3127
• /
• 2000

본 논문은 성덕대왕 신종과 인체의 진동 특성의 상관관계를 분석함으로서 진동 특징 추출의 새로운 방안을 도출하기 위한 연구이다. 신종의 종, 움통, 울림통과 기타 비대칭적 요소들을 인체의 몸체, 성도, 횡경막과 인체구조의 비대칭적 요소들에 대비시켜 각각의 음향 특성들을 실험을 통하여 비교 분석하였다. 실험결과, 대비시킨 각 요소들의 음향 특성이 매우 흡사하여, 신종의 소리 특성에 관한 정보가 인체의 진동 전달 특성을 분석하는 데 있어서도 매우 유용하게 적용될 수 있다는 것을 확인하였다.

• 한국정보처리학회논문지
• /
• 제6권2호
• /
• pp.522-533
• /
• 1999

본 논문에서는 피지 파라미터와 퍼지 추론을 포함한 화자 인식 알고리즘을 제안한다. 시간영역에서 검출 알고리즘의 장점인 잡음에 강인함을 가진 PVPF 법을 제안하여 피치를 검출한다. 또한 화자 인식에서 특징량들의 애매성을 표현하고 인식하는 방법으로 퍼지 이론을 도입하였다. PVPF는 음의 시간적인 특징을 이용하여 국부적으로 봉우리와 골을 이룬다는 것을 이용한 계산량이 적고 잡음에 강인한 피치 검출법이다.

• Journal of Chest Surgery
• /
• 제5권2호
• /
• pp.135-140
• /
• 1972

Papilloma of the upper respiratory tract, particularly larynx and vocal cords are relatively common disease. However, solitary papilloma of the bronchus is extremely rare condition and only a handful cases were reported in the literature. The patient is a 39 year old housewife who has been suffering from productive cough and occasional hemoptysis in the past one year. X-ray of the chest showed complete atelectasis of the right upper lobe. Bronchography revealed a hemispherical protruding mass in the right main bronchus with complete occlusion of the upper lobe bronchus. Bronchoscopy showed a whitish friable mass in the lumen of the right main bronchus biopsy of which was reported as benign papilloma. Right upper lobectomy together with wedge resection of the portion of right main bronchus to include the tumor was done. Cut-edges of the bronchus were stitched together with interrupted fine dacron sutures. During this procedure, right main bronchus was gently clamped with non-crushing Satinsky type clamp. Patient has had uneventful recovery from surgery and was discharged without symptom. Patientis doing well three months following the operation.