• Proceedings of the KSPS conference
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• 2003.10a
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• pp.115-119
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• 2003

This study compared pitch range, speech rate, pause, intonation type and boundary tones of four sentences produced by five transgenders (male to female) to those of twenty normal adults. Voice analysis was done by Praat (version 4.049). Results indicated that there was a difference in pitch range, speech rate, pause, intonation type and boundary tones among the 3 groups(transgenders, normal males and normal females). Especially, transgenders indicated boundary tones more frequently than normal adults.

• Proceedings of the KSPS conference
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• 2003.10a
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• pp.159-162
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• 2003

This study investigates Korean phonation types in terms of spectral characteristics of release bursts. Particularly, this study compares intensity of the speech signal in the release burst, the center of gravity and skewness of the spectra of the release bursts across phonation types for the Korean alveolar plosives. The results showed that there was no significant difference in intensity, center of gravity, or skewness across phonation types but a significant difference across speakers.

• Proceedings of the KSPS conference
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• 2005.04a
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• pp.77-80
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• 2005

The aim of this paper was to analyze the lexical effects on spoken word recognition of Korean monosyllabic word. The lexical factors chosen in this paper was frequency, density and lexical familiarity of words. Result of the analysis was as follows; frequency was the significant factor to predict spoken word recognition score of monosyllabic word. The other factors were not significant. This result suggest that word frequency should be considered in speech perception test.

• MALSORI
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• no.67
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• pp.135-147
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• 2008

In this paper, we propose a method for source localization in reverberant environments based on an adaptive eigenvalue decomposition (AED) algorithm which directly estimates channel impulse responses from a speaker to microphones. Unfortunately, the AED algorithm may suffer from whitening effects on channels estimated from temporally correlated natural sounds. The proposed method which applies sparse priors to the estimated channels can avoid the temporal whitening and improve the performance of source localization in reverberant environments. Experimental results show the effectiveness of the proposed method.

• Proceedings of the KSLP Conference
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• 2003.11a
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• pp.234-235
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• 2003

목적 : 본 연구의 목적은 기질적 조음장애 중 운동구어장애자의 유형에 따른 음운변동 패턴을 연구하여 각 집단만의 신경학적 손상으로 인한 조음운동 패턴을 분석하고자 하는데 있다. 운동구어장애자의 조음 오류에 대해서 SDO(substitution, distortion, omission) 분석적 접근을 하는 것이 일반적이며 따라서 음운변동 분석을 함으로써 이들의 오류패턴의 유형을 찾고, 언어중재 시에 이들의 조음기관 관련 근운동의 훈련을 보다 체계적으로 실시할 수 있을 것이라고 본다. (중략)

• Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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• v.7 no.1
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• pp.20-26
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• 1996

The purposes of this study were to analyze the sound of bird's frequency region and pattern and to discuss hearing impaired children's auditory discrimination. The results were ie follows; 1) The sounds of bird's frequency region were divided into Low(below 1, 000Hz), Mid(between 1, 000 and 4, 000Hz) and High(between 2, 000 and 4, 000Hz). 2) The sounds of bird, which were same, long, high pattern, were in Mid ＆ High. Short and high pattern were above High.

• MALSORI
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• no.54
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• pp.15-26
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• 2005

The aim of this paper was to analyze the lexical effects on spoken word recognition of Korean monosyllabic word. The lexical factors chosen in this paper was frequency, density and lexical familiarity of words. Result of the analysis was as follows; frequency was the significant factor to predict spoken word recognition score of monosyllabic word. The other factors were not significant. This result suggest that word frequency should be considered in speech perception test.

• Proceedings of the KSLP Conference
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• 1998.11a
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• pp.201-207
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• 1998

현악기의 대표격 악기라고 할 수 있는 바이올린이나 기타는 소리(음원)를 만들어 내는 역할을 하는 줄(현)과 공명통이 합쳐져 있는 모양을 하고 있다. 활로 바이올린 줄은 긁거나 기타줄을 손으로 튕겨서 소리를 만들어 내면, 이 소리는 공명통을 울려서 크고 아름다운 소리가 발생되는 것이다. 사람의 목소리도 이러한 현악기와 비슷한 구조를 가지고 있어서, 두 개의 줄모양을 하고 있는 성대에서 성대음(glottal sound)을 만들어 내며 이 성대음이 성도(성도, vocal tract)를 통과하면서 여과(filtration) 되고 성도의 모양에 따른 특성에 따라 공명(resonance) 현상을 일으켜서 입술이나 콧구멍 바깥으로 방출되어 말소리(speech sound)를 만들어내는 것이다. (중략)

• Proceedings of the Korean Information Science Society Conference
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• 2003.04d
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• pp.280-282
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• 2003

본 연구에서는 HFC망에서 음성 통화품질에 영향을 주는 파라미터들에 대한 분석과 측정을 통해 VoIP의 특성을 파악하여 향후 본격적으로 이루어질 인터넷을 통한 음성 서비스 제공에 대비하였다 특히, VoIP QoS 기준의 정의는 QoS 파라미터의 분석을 토대로 한 lab 테스트와 HFC VoIP 서비스의 필드 측정을 병행하여 연구 결과에 대한 실질적 서비스 적용에 따르는 신뢰성을 높였다.

• Journal of the Microelectronics and Packaging Society
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• v.7 no.2
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• pp.47-53
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• 2000

The fluxless wetting properties of TSM-coated glass substrate were evaluated by the wetting balance method. We could estimate the wettability of the TSM with new parameters obtained from the wetting balance test for one side-coated specimen. It was more effective in wetting to use Cu as a wetting layer and Au as a protection layer than to use Au itself as a wetting layer. The SnSb solder showed better wettability than SnAg, SnBi, and SnIn solders. The contact angle of the one side-coated glass substrate to the Pb-free solders could be calculated from the farce balance equation by measuring the static force and the tilt angle.