• 음성과학
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• 제8권3호
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• pp.43-50
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• 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.

• 말소리와 음성과학
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• 제16권2호
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• pp.91-97
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• 2024

본 연구에서는 음성 떨림의 음향학적 측정을 위해서 AVTI(Acoustic Voice Tremor index)를 개발하고 검증하는 것을 목표로 한다. 정상 성인 71명, 음성 떨림 환자 41명이 참여하였으며, 모음/아 /를 5초 이상 녹음하였다. 모음 안정구간 3초를 편집하여 Praat 스크립트를 이용하여 음성 떨림 관련 18개의 변수 측정값을 확인하였다. 이 변수들과 청지각적 평가 전반적 중증도(overall severity, OS)를 이용하여 선형 회귀분석을 돌려 AVTI를 구성하였다. 선형 회귀분석 결과, 18개 중 4개의 변수가 유의미하게 확인되고 회귀식이 구성되었다. 내부/외부 타당도 조사에서도 평균 0.8 이상의 높은 연관성을 나타내었다. AVTI는 OS와 0.841의 높은 상관관계를 보였다. AVTI를 통해서 음성 떨림을 예측할 수 있었다. 후속 연구에서는 더욱 많은 음성샘플과 보완된 Praat script를 추가 분석해 볼 필요성이 있을 것으로 생각된다.

• 말소리와 음성과학
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• 제9권4호
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• pp.129-136
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• 2017

This study investigates the effect of voice quality on speech intelligibility and the relationship between voice quality and intelligibility for children with spastic CP. We recruited 36 children with spastic CP (mean age 10.43 year, 17 girls, 19 boys, spastic type 34, mixed 2) from a special school and a rehabilitation hospital. Voice samples for the perceptual analysis of voice quality were extracted from a sustained vowel /a/ and were rated on the GRBAS scales by two experienced speech language pathologists. Ten adult subjects with no hearing problems evaluated speech intelligibility for the 37 words listed in the Assessment of Phonology and Articulation for Children on a 7-point interval scale. The children with spastic CP were divided into three groups according to the rated G scores on the GRBAS scales (G1(n)=10, G2(n)=13, G3(n)=13). Analyses of ANCOVA and Pearson correlation showed that there was a significant difference in speech intelligibility among three groups. There was also a significant correlation in G scale (grade), A scale (asthenia), B scale (breathy) score, and speech intelligibility. These findings suggest that poor speech intelligibility of spastic CP might be related to asthenia and breathiness. Vocal intensity should be increased and vocal functioning should be improved for speech therapy to improve speech intelligibility of the children with spastic CP.

• 음성과학
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• 제15권4호
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• pp.147-157
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• 2008

Habitual speaking fundamental frequency (sF0) plays an important role in determining the voice classification, which can be presented differently depending on the vocal fold length and language habits. The purpose of this study, therefore, was to compare the differences in sF0 for voice classification and closed quotient between speaking and singing. Seventeen singers (7 sopranos, 5 tenors, 5 baritones, mean age 25.1 years) with no evidence of vocal folds pathology were participated. sF0 and closed quotient (CQ) both in speaking and in singing (A3-A5 with soprano, A2-A4 with tenor and baritone) were measured using SPEAD program and electroglottography. No significant differences were observed for sF0 between tenor and baritone groups (p> 0.05). However, CQ in singing was significantly different among three groups (p< 0.05), but CQ in speaking was not (p> 0.05). Furthermore, CQ was significantly different with both soprano (p< 0.01) and tenor groups ((P= 0.02) whereas baritone group revealed there is no difference when compared between speaking and singing. No significant differences in sF0 between tenor and baritone participants may result from decision-making for voice classification by experience and should measure sF0 before determining the voice classification.

• 대한음성학회:학술대회논문집
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• 대한음성학회 2004년도 춘계 학술대회 발표논문집
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• pp.209-213
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• 2004

The aim of this paper is to analyze vowel in voice imitation, and to find the invariable phonetic features of the speaker. In this paper we examined the formants of vowel /a, u, i/. The results of the present are as follows : (1) Speakers change their vocal tract cavity features. (2) F1 changes easily compared to $F2{\sim}F3{\sim}F4$. (3) F3-F2 appears to be constituent for a speakers identification in vowel /a/ and F4-F2 in vowel /i/.

• 대한음성학회:학술대회논문집
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• 대한음성학회 2005년도 춘계 학술대회 발표논문집
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• pp.71-75
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• 2005

We can easily recognize the voices already known to us. But what about unknown voices? Is there any relationship between voices and the images triggered by the voices? Actually, this question has been partly addressed by Moon(2000, 2002). The current study aims at shedding some more lights on the topic by investigating the relationship between unknown foreign voices and the images triggered by them. Speech samples from 16 American males and females (8 each) were recorded and 180 Korean subjects without any knowledge of the American Speakers were asked to match the voices with the corresponding photos. And the number of corrects matches between voices and pictures of the current study was less than that of Korean-speakers and Korean-listeners case. But in terms of the majority matches, regardless of correctness, the present study showed a similar trend: that is, there is more than a chance relationship between voices and the images triggered by the voices.

• 대한음성학회:학술대회논문집
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• 대한음성학회 2007년도 한국음성과학회 공동학술대회 발표논문집
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• pp.52-54
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• 2007

This study has investigated the basic data of untrained boys and girls' VRP. The VRP comparison was executed between 5 boys(lO to 11 years old) and girls(10 to 11 years old). The measure of VRP was implemented by using Dr. Speech 4.0(Tiger-electronics) phonetogram program. The comparison of boys and girls' maximum and minimum range, the mean of boys' maximum range is 93.68dB(SD 7.90) and girls' range is 93.12dB(SD 5.11). There was no difference and the mean of minimum range of boy is 68.08dB(SD 3.59), girl is 71.10dB(SD 3.06).

• 한국영어학회지:영어학
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• 제2권1호
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• pp.23-30
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• 2002

Phonologically, the difference between the English stops /b, d, g/ and /p, t, k/ is carried by the presence or the absence of the vocal fold vibration throughout their oral closure phase. If phonology has its foundation in phonetics, there must be phonetic evidence for the voiced-voiceless distinction. This study is aimed to determine whether or not the voiced-voiceless distinction is acceptable or proper in English. The determination was based mainly on findings in the existing literature and in informal experiments. In conclusion, there is no phonetic evidence for the voiced-voiceless distinction both in production and perception. The [voice] appears to be one of potential phonetic correlates of the phonologically voiced stop. It is improper to use the [voice] as independent phonological marker, regardless of position (word-initial, intervocalic, word-final). A feature other than the voiced-voiceless feature must distinguish /b, d, g/ from /p, t, k/.

• 한국항해항만학회:학술대회논문집
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• 한국항해항만학회 2023년도 춘계학술대회
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• pp.19-20
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• 2023

IALA Guideline 1132 is intended to assist authorities in implementing the procedures described in IALA Recommendation R1012: VTS Communications with the objective of harmonizing VTS communications through the use of standard message structure and phraselogly. For this reason, it is recommended that VTS Authorities put adequate procedures in place to ensure its consistent and correct implementation for the actual VTS operation as is now being considered in IALA as part of the VTS English language proficiency test. In light of the 2022 publication of IALA Guideline 1132: VTS Voice Communications and Phraseology, in this sense, the potential evaluative variables will be studied in the context of this presentation.

• 재활복지
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• 제22권1호
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• pp.157-168
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• 2018

본 연구는 반폐쇄성도훈련에 기반을 둔 성대에어로빅치료(Vocal Aerobic Treatment: VAT)가 소프라노 성악가 음성개선에 미치는 영향을 알아보고자 하였다. 연구대상은 성대결절로 음성문제를 호소하는 소프라노 성악가 1명으로 연구를 진행하였다. 연구방법은 치료 전 후 음향학적평가와 주관적 음성평가를 실시하여 측정값을 비교하였으며, 성대에어로빅치료는 주 2회 총 32회기동안 진행하였다. 음향학적 평가는 MDVP (multi-dimensional voice program)와 VRP (voice range profile)를 사용하여 음도, 음질, 음역을 평가하였으며, 주관적 음성평가는 SVHI (singing voice handicap index)로 주관적인 음성만족도를 평가하였다. 음도 평가 결과 치료 후 소프라노 가수에 적절한 기본주파수(Fo)를 유지하였다. 음질평가 결과 주파수변동률(Jitter), 진폭변동률(Shimmer), 배음대소음비(NHR) 수치가 치료 전보다 감소하였다. 음역평가결과 음역의 범위가 넓어졌으며 반음의 개수가 30개에서 35개로 증가하였다. 주관적 음성평가는 설문 보고 후 획득한 총 점수를 문항수로 나눈 결과 3.6점에서 0.6점으로 감소하였으며, 본인이 느끼는 음성문제의 정도가 경미하다고 보고하였다. 이러한 결과를 정리해보면 성대에어로빅치료는 성악가 음성개선에 효과적인 것으로 사료된다. 그러나 본 연구는 소프라노 성악가 1명을 대상으로 한 성대에어로빅치료의 치료 효과에 관한 사례연구로 향후 더 많은 성악가를 대상으로 효과에 대한 연구가 이루어져야 할 것이다. 또한 성악가뿐만 아니라 다양한 직업적 음성사용자를 위한 음성관리 및 음성치료프로그램에 관한 후속 연구가 필요할 것이다.