• Proceedings of the KSLP Conference
• /
• 2003.11a
• /
• pp.187-189
• /
• 2003

제목 음도 고정시 강도변화 <음도> Vocal Pitch 정상성인의 비음도 저항(Impedance)$\rightarrow$임피던스, Jitter : 주파수의 섭동정도 cycle to cycle frequency perturbation, 주기적 펄스파형의 폭, 주파수, 위상이 잡음 등에 의해 정상위치를 약간 벗어나는 현상 또는 변도량을 말한다. Shimmer : 진폭의 섭동정도 (중략)

• Proceedings of the KSLP Conference
• /
• 1997.11a
• /
• pp.253-253
• /
• 1997

비폐색이 있는 경우 음성이 변하는 것을 쉽게 느낄 수 있지만, 비폐색 때의 음향학적인 특성에 대하여 알려진 바를 찾기는 쉽지 않다. 저자들은 인위적으로 비폐색을 유발하여 비폐색 부위에 따른 비강자음의 음향학적 변화특성을 파악하고 비음도의 변화 정도를 비교하고자 하였다. 정상비음도를 보이는 성인남녀 각 10명을 대상으로, 2ml의 부피를 갖도록 수술용장갑에 Merocel$^{\circledR}$을 넣은 뒤, 이를 이용하여 ostiomeatal unit(OMU)을 중심으로 전후상하 4부위의 인위적인 비폐색을 유발하여, 비폐색 전과 후의 부위에 빠른 차이틀 비교하였다. /나나/의 발성을 각 조건에서 3회 실시하여, 모음중간의 /ㄴ/중 (CVCV) 안정된 spectorgram소견을 보이는 부위를 선택하여, 해당구간의 제1, 제2, 제3 음형대와 각각의 bandwidth 평균값을 남녀별로 비교하였고, 표준비음비율이 알려진 rabbit, baby, mama 문장을 이용하여 비음비율을 비교하였다. 남녀모두 비폐색전에 비하여 OMU의 앞쪽부위를 막은 경우에 제1음형대가 가장 뚜렷하게 감소되었으며, 비음비율의 유의한 감소를 보였다. 비폐색이 있는 경우, 비강자음 /ㄴ/은 제1음형대를 중심으로 주요변화가 일어남을 알 수 있었으며, 비폐색 부위에 따라 비음비율이나 제1음형대 감소의 정도가 다름을 알 수 있었다.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
• /
• v.21 no.2
• /
• pp.128-132
• /
• 2010

Background and Objectives : This study was designed to examine the effect of nasal cavity surgery on voice in terms of nasalance by using subjective test, Visual analogue scale (VAS) and Nasometer and compare the pre op and post op results among patiets with nasal cavity disease. Materials and Method : From April 2009 to November 2009, data of thirty one patients who underwent nasal cavity surgery were prospectively evaluated. 24 males and 7 females with age range between 12 years to 80 years old (average 34 years old) were chosen. VAS was questioned to patients group before, after 1 week, after 1 month, and after 3 months from the surgery. Nasometer, was also conducted. Results: After the surgery symptoms like nasal obstruction, mouth breath, snoring, and sleep apnea were all improved. Improvements for nasal obstruction and mouth breath were observed statistically in post operative day (POD) 1 month and POD 3 months. Also snoring was improved statistically in POD 1 month. Objective nasalance test showed increases in a single and double vowel for POD 3 months. Only /je/ sound statistically-significant increased in all post operative periods. Nasalance increase were observed in other test results. Conclusion : All the symptoms are improved after nasal cavity surgery. Also there are some nasalance changes during whole period of study and return to the pre operative state in POD 3 months. Therefore, patients must be warned and understood about nasalance changes, and surgeons need to aware of various facts, which can affect voice changes before the surgery.

• Korean Journal of Cleft Lip And Palate
• /
• v.13 no.2
• /
• pp.53-62
• /
• 2010

Nasalance is used to evaluate the velopharyngeal incompetence in clinical diagnosis using Nasometer. The aim of this study is to find the nasalance differences between English native speakers and Korean speakers by measuring the nasalance of Oral and Nasal sentences. 20 Americans and 20 Korean students participate to the experimentation. The results are as follows: (1) The nasalance of females for Oral and Nasal sentences is higher than that of males for both native and Korean speakers. (2) The nasalance of Oral sentences in Korean men and females is higher than that of Oral sentences in American men and females, however, the nasalance of Nasal sentences in American men and females is higher than that of Nasal sentences in Korean men and females. (3) The nasalance of stop consonants /p, t, k/ in Korean men and females is higher than that of consonants in American men and females. (4) The nasalance of nasal consonants /m, n, ɧ/ in American men and females is higher than that of consonants in Korean men and females.

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
• /
• v.22 no.2
• /
• pp.115-118
• /
• 2011

Background and Objectives : The voice change occurs after tonsillectomy and adenoidectomy. This study was designed to examine the postoperative nasalance changes using Nasometer. Materials and Method : From April 2009 to February 2010, data of twenty-eight patients who underwent tonsillectomy, tonsillectomy & adenoidectomy were evaluated. 12 males and 16 females were chosen. Nasalance test was performed before, after 1 week, after 1 month from the surgery. Results : Postoperative mean nasalance results statistically significant increased in 1 weeks after surgery, and returned to the preoperative state in 1 month after surgery. Conclusion : Although the nasalance increased immediately after tonsillectomy and adenoidectomy temporally, it was recovered 1 month after surgery. Therefore, the voice change that come postoperatively could be considered as no concern, and surgeons need to aware of various facts, which can affect voice changes before the surgery.

• Korean Journal of Cleft Lip And Palate
• /
• v.8 no.2
• /
• pp.53-62
• /
• 2005

Submucosal type cleft palate is a kind of cleft palate. A submucosal cleft may result in shortening of the anteroposterior dimension of the hard or soft palates or both. The increased distance along with the lack of muscle connection in the soft palate usually accounts for the lack of palatopharyngeal function in patients with submucosal cleft. Resonance disorders which is found in cleft patients show hypernasality or hyponasality. Many cases of submucosal type cleft palate patients visit our clinics due to hypernasality. In this study, resonance disorders was evaluated through nasalance test. Experimental group was composed of submucosal type cleft palate patients. The patients were treated by a so-called combined therapy, i.e., operation and speech training. To observe the changing pattern by surgery, nasalance test was carried out one time before surgery and three times after surgery. Nasometer II was used as a examination. The questionaire was filled with single vowels & diphthongs. The mean nasalance score of the child was significantly lower than that of the adult at every vowel. An early age at operation (under 10 years) was that a better functional result was achieved with patients. The mean nasalance score of /i/ was highest and that of /a/ was the lowest. The result of corrective surgery in selected cases has achieved improvement in all cases. Hypernasality has been consistently diminished. he operation.