• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1989년도 한국자동제어학술회의논문집; Seoul, Korea; 27-28 Oct. 1989
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• pp.431-436
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• 1989

A rule-based recognition system for Korean spoken place names using anti-formants which is analyzed by ARMA model is presented. The recognition system is composed of three parts; the extraction, the recognition and the recognition support. As a result of experiment, the recognition rates of city place names was 90.9%.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 신호처리소사이어티 추계학술대회 논문집
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• pp.325-328
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• 2003

In this paper, we tried to develop a vowel training assistant method using vowel formant statistics. Formant statistics were obtained from PBW set consists of 452 words from 8 persons. Then, we calculated distance from input formants to each center of vowel formant space. Based on the distance, directions to correct the speaker's manner of articulation, i.e. position of jaw and tongue.

• 대한음성언어의학회:학술대회논문집
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• 대한음성언어의학회 1993년도 제1회 학술대회 연제순서 및 초록집
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• pp.17-17
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• 1993

한국어 모음 발성시 책은 Videovelopharyngogram과 동시에 녹음된 음성을 분석하여, 각 모음별로 성도내 좁힘에 대한 성문으로부터의 거리를 측정하고, 음 대를 구하여 그 상관관계를 알아보았다. 측정 인원은 표준말을 사용하는 것으로 판정된 성인 남녀 각 5명으로 하고, 측정방법으로 Simens Pantoscop 를 이용하여 Videovelopharyngogram을 얻고, DT282-F-6 SE board로 digitized된 음성을 CSpeech version 3. 의 software로 분석하였다.(중략)

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2003년도 하계종합학술대회 논문집 Ⅳ
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• pp.2439-2442
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• 2003

In this paper, we examine the acoustic characteristics of Korean vowels on pitch alteration utterance. The prosody is known as an indicator of acoustic characteristics of emotions. Also, speech is acoustically differenced according to the emotional variation and environmental variation, although speaker utters the same speech. We analyzed the spectral envelopes and formants from the voiced regions as data points on the speech waveform.

• 음성과학
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• 제11권4호
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• pp.7-15
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• 2004

In this paper, we develop a vowel training assistant method using vowel formant statistics. Formant statistics were obtained from a PBW set consisting of 452 words from 8 persons. Then we calculated distance from input formants to each center of vowel formant space. Based on the distance, directions could be given to correct the speaker's manner of articulations, i.e. position of jaw and tongue.

• 대한음성학회:학술대회논문집
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• 대한음성학회 1996년도 10월 학술대회지
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• pp.521-528
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• 1996

This presentation explores on the perceptual characteristics of the lateral sound /l/ in CV syllables. At initial position we found that /l/ has well marked formant transitions. Then several questions arise: 1) are these formant structures dependent on the following vowel\ulcorner. 2) Are the formant transitions giving an additional cue for the identification\ulcorner Considering that the French vocalic system presents a greater variety of vowels than Spanish, several experiments were designed to verify to what extent a more extensive range of vocalic timbres contribute to the perception of /l/. Natural emissions of /l/ produced in Argentine Spanish and Canadian French CV syllables were recorded, where V was successively /i, e, a, o, u/ for Spanish and /i, e, $\varepsilon$, a, $\alpha$, o, u, y, \phi$/ for French. For each item, the segment C was maintained and V was replaced by cutting & splicing by each of the remaining vowels without transitions. Results of the identification tests for Spanish show that natural /l/ segments with low Fl and high formants F3, F4 can be clearly identified in the /i, e, u/ vowel contexts without transitions. For French subjects the combination of /l/ with a vowel without transitions reflected correct identifications for its own original vowel context in /e, $\varepsilon$, y, $\phi$/. For both languages, in all these combinations, F1 values remained rather steady along the syllable. In the case of /o, u/ very likely the F2 difference lead to a variety of perceptions of the original /l/. For example in Ilul, French subjects reported some identifications of /l/ as a vowel, mainly /y/. Our observations reinforce the importance of F1 as a relevant cue for /l/, and the incidence of the relative distance between formants frequencies of both components.

• 대한음성학회:학술대회논문집
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• 대한음성학회 1996년도 10월 학술대회지
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• pp.362-366
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• 1996

This paper is generally divided in 2 parts. One is the study on vowels about korean singer's lyric song in view of Daniel Jones' Cardinal Vowel. The other is acoustic study on vowels in my singing about korean lyric song. Analysis data are KBS concert video tape and CSL's. NSP file on my singing and Informants are famous singers i.e. 3 sopranos, 1 mezzo, 2 tenors, 1baritone, and me. Analysis aim is to find out Korean 8 vowels([equation omitted]) quality in singing. The methods of descrition are used in closed vowels, half closed vowels, half open vowels, open vowels and rounded vowels, unroundes vowels and formants. The study of the former is while watching the monitor screen to stop the scene that is to be analysixed. The study of the latter is to analysis the spectrogram converted by CSL's. SP file. Analysis results are an follows: Visual and auditory korean vowels quality in singing have the 3 tendency. One is the tendency of more rounded than is usual Korean vowels. Another is the tendency of centralized to center point in Cardinal Vowel and the other is the tendency of diversity in vowel quality. Acoustic analysis is studied by means of 4 formants. Fl and F2 show similiar step in spoken. In Fl there is the same formant values. This seems to vocal organization be perceived the singign situation. The width of F3 is the widest of all, so F3 may be the characteristics in singing. In conclude, the characteristics of vowels in Korean lyric songs are seems to have the tendencies of rounding, centralizing to center point in Cardinal Vowel, diversity in vowel quality and, F3'widest width in compared with usual Korean vowels.

• 한국통신학회논문지
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• 제34권10B호
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• pp.1062-1069
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• 2009

비만으로 인해 대사증후군을 많이 앓고 있는 상황에서 후유증으로 신장 질환이 커다란 사회문제가 되고 있는 실정이다. 따라서 자각증상이 없는 신장의 이상 유무를 조기에 판단하여 적절한 조치를 취하는 것이 무엇보다 중요하다. 이를 위해 본 논문에서는 음성 분석을 통해 신장 질환을 무자각, 무구속, 무통종의 방법으로 진단할 수 있는 방법을 제안하였다. 구성하고자 하는 전체 시스템은 크게 음성 분석과 얼굴색을 살피는 방법을 결합시키는 시스템이 개발되고 있으며 이 중 본 논문은 입술소리를 기반으로 신장 질환을 진단하는 방법에 설계하였다. 이를 위해 본 논문에서는 첫째, 신장 질환을 앓고 있는 환자와 정상인을 대상으로 피실험자 집단을 각각 구성하고 입술소리의 수치학적 분석을 실험으로 출력하고 그 결과값에 대한 비교 분석을 수행하였으며 둘째, 한의학적 청진 이론과 언어학, 음성학과의 상관성을 분석하고 이를 기반으로 음성에 대한 신장의 특징 요소를 추출하여 제1포먼트 주파수와의 연관성을 도출하였다. 실험 결과 신장 질환자 집단이 정상인 집단보다 제1포먼트 주파수 대역폭이 넓게 형성되는 결과를 추출하였으며 최종적으로 입술소리만으로 신장 질환을 진단할 때의 오진 확률에 대해 계산하였다.

• 대한소아치과학회지
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• 제23권2호
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• pp.375-388
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• 1996

It has widely known for speech problem in patients with malocclusion, but there have been insufficient studies on degrees of severity. Patients with openbite and Cl III malocclusion usually have speech problem. It has widely known that fricative /s/is pronunciated most abnormally in Cl III malocclusion than any other consonant. Therefore 20 children with anterior crossbite were selected for study groups and 40 children with normal anterior occlusion were selected for control group. 7 sounds such as / 사(sa), 서($s{\delta}$), 소(so), 수(su), 스($s{\omega}$), 시(si), 세(se) / were recorded, and the formants and formants ratios were measured by using Sensimetric Speech Station, which is speech analyzing program in IBM PC. The results were as follows : 1. In anterior crossbite group, F1 of all 7 sounds were significantly higher than normal anterior relationship group(p<0.05). 2. There were no significant difference in F2 between two groups except / 소(so), 수(su)/(p>0.05). 3. In anterior crossbite group, F2/F1 ratio of all 7 sounds were significantly smaller than normal anterior relationship group(p<0.05). 4. There were no significant difference in accordance with tongue position(p>0.05).

• 한국융합학회논문지
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• 제10권9호
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• pp.193-198
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• 2019

본 연구는 근위축성측삭경화증(amyotrophic lateral sclerosis, ALS)으로 진단된 여성을 대상으로 음향음성학적 스펙트로그램 분석을 이용하여 11개월 동안 모음과 이중모음의 포먼트 변화(vowel formant variation)를 분석하였다. 검사어는 단모음 /a, i, u/와 이중모음 /h + ja + da/, /h + wi + da/, /h +ɰi+ da/를 이용하였다. 발화자료는 'Alvin' 프로그램을 이용하여 모니터에 제시된 단어읽기과제를 통해 수집되었고, 녹음환경은 nyquist frequency는 5,500Hz, sampling rate는 11,000Hz으로 설정하였다. 녹음자료는 스펙트로그램을 이용하여 강도, 음도와 이중모음의 포먼트를 분석하였다. 분석결과, ALS의 진행과정에서 기본주파수와 강도가 저하되었고, 단모음에서의 포먼트 변화보다는 이중모음의 포먼트 기울기의 감소가 특징으로 확인되었다. 이 결과는 병의 진행에 따른 ALS의 모음왜곡이 혀와 턱의 협응력 감소에 기인함을 시사한다.