• The Journal of the Acoustical Society of Korea
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• v.30 no.6
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• pp.337-343
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• 2011

With commencing trial 3D digital broadcasting, the studies on next generation digital broadcasting technology for coming UHDTV era is being actively progressing. In this paper, I propose surround audio formats for next-generation digital TV broadcasting, along with comparative study of major surround audio formats in use or under development. I did comparative study on current major competing surround formats such as Dolby True HD and DTS HD MA, along with NHK proposed 22.2 channel surround format for UHDTV system. Upon this comparative study and our housing situation consideration, I propose lossy compression 3D surround 7.1 channel surround format along with loosless 2.0 and 4.0 hi-fi format as next generation digital TV broadcasting standard. In lieu with this, I also propose transmitting binaural 2 channel audio data as sub-audio. It will give holographic sound experience when properly processed with individual HRTF (Head Related Transfer Function) with headphone. The table for data rate of each proposed audio format is also presented.

• The Journal of the Korea Contents Association
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• v.13 no.2
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• pp.81-87
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• 2013

SBS [Healing Camp] seems like having a different sound usage from other entertainment programs. After content analysis, I found that [Healing Camp] uses much more music & sound effects than [Muhandojeon]. Music & sound effects of [Healing Camp] has functions of tautological informing, uplush of emotion or Ancrage, narrating or Relais. It is very similar to television subtitle. Positive uses of music & sound effects are expected to catch the attention of audience and to increase the ratings. But [Healing Camp] uses music & sound effects very positively and systematically and opens a new dimension of narratives.

• Electronics and Telecommunications Trends
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• v.31 no.3
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• pp.81-90
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• 2016

현재, 극장 사운드를 중심으로 객체기반 오디오 기술을 포함하는 하이브리드 포맷의 사운드 서비스가 점차 확산되고 있으며, 미국, 유럽, 한국 등에서는 차세대 방송용 오디오에 객체기반 오디오 기술의 도입을 적극적으로 고려하고 있다. 객체기반 오디오 기술은 콘텐츠의 제작단계에서 재생환경을 고려할 필요가 없고, 현장의 음향을 신호와 3차원 공간정보로 구분하여 음향공간의 정보를 그대로 표현함으로써, 재생단말에서 3차원 공간정보를 활용하여 재생할 수 있게 한다. 이러한 객체기반 실감음향 기술개발을 위해서는 편리한 제작 및 3차원 공간정보 표현 기술이 필요하며, 청취환경에서는 객체기반 실감음향 콘텐츠를 제작자의 의도대로 렌더링할 수 있는 재생 및 제어 기술이 필요하다. 이에 객체기반 실감음향 기술이 포함되는 하이브리드 오디오 기술의 현황에 대하여 살펴보고자 한다.

• Proceedings of the Korea Database Society Conference
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• 2008.05a
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• pp.87-106
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• 2008

This study identified the properties of online game, and analyzed existing studies on the impact of the properties of online game on flow. As a result, graphics, sounds, scenarios, game speed, manipulability, and item difficulty were identified as properties of online game, which were influential factors to flow. As a result, the hypotheses on scenarios, game speed, and item difficulty were adopted as significantly influential factors to flow, Attribute of online game. Meanwhile, the hypotheses on graphics, sounds, and manipulability, which were expected to significantly impact flow, were rejected.

• Proceedings of the Korean Society of Computer Information Conference
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• 2018.07a
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• pp.76-77
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• 2018

본 논문에서는 재미있는 게임을 제작하기 위해 사용자 몰입을 극대화 할 수 있는 장치를 분석하고 이 가운데 청각적인 요소를 집중적으로 활용한 게임 디자인에 대해 소개하고자 한다. 암흑의 공간에서 긴장감을 조성하고 다양한 오브젝트들의 특성을 반영한 사운드를 이용하여 게임월드를 탐험하도록 설계하였고 이를 구현하였다. 본 게임은 사용자 몰입을 위한 게임 설계에 좋은 가이드라인이 될 것으로 기대한다.

• Journal of the Korean earth science society
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• v.41 no.5
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• pp.478-489
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• 2020

This study presents an analysis of infrasonic signals from two accidental explosions in Gwangyang city, Jeonnam Province, Korea, on December 24, 2019, recorded at 12 infrasound stations located 151-435 km away. Infrasound propagation refracted at an altitude of ~40 km owing to higher stratospheric wind in the NNW direction, resulting in favorable detection at stations in that direction. However, tropospheric phases were observed at stations located in the NE and E directions from the explosion site because of the strong west wind jet formed at ~10 km. The transmission losses on the propagation path were calculated using the effective sound velocity structure and parabolic equation modeling. Based on the losses, the observed signal amplitudes were corrected, and overpressures were estimated at the reference distance. From the overpressures, the source energy was evaluated through the overpressure-explosive charge relationship. The two explosions were found to have energies equivalent to 14 and 65 kg TNT, respectively. At the first explosion, a flying fragment forced by an explosive shock wave was observed in the air. The energy causing the flying fragment was estimated to be equivalent to 49 kg or less of TNT, obtained from the relationship between the fragment motion and overpressure. Our infrasound propagation modeling is available to constrain the source energy for remote explosions. To enhance the confidence in energy estimations, further studies are required to reflect the uncertainty of the atmospheric structure models on the estimations and to verify the relationships by various ground truth explosions.

• The Journal of the Korea Contents Association
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• v.21 no.6
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• pp.425-434
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• 2021

This study is subjected to two linked research. First is the creation process of dance work applying noise and non-musical sounds in our daily life based on understanding the classification, perception, and factor of the sound, through Murray Schafer's concept of 'soundscape'. Second is to find the value of new type of choreography and musical effect of creation process of the dance work . According to methodological research of practice-based research, three stages which is practice, theory and evaluation were accumulated as somatic data, And the analysis was provided a basis by presenting in a figuration, form of the movement and method of specialization with reference to the paper 『space design and forming practice』(2003). As a result, the creation process was able to discover the musical effect of the sound in daily life and new method of choreography, and also find the possibilities that sound could convey the theme of the dance work, the meaning of the movement and the overall atmosphere of the work to audience. In addition, It is expected that will have been made another new creation environment by potential that music has based on concept 'soundscape'.

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2010.10a
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• pp.220-221
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• 2010

• Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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• 2010.10a
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• pp.222-223
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• 2010

• Science of Emotion and Sensibility
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• v.10 no.4
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• pp.613-622
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• 2007

Recently, sound design is being made by corporations for the production as well as for marketing and web with consideration of image of productions and attributes to improve corporational image through the design of melody which would remain in users. And sound is becoming an important factor to establish the identity of each area such as life environment and public facilities. At present, our local governments are promoting active business like as CIP to improve urban image but there is a limit to establish identity as the result of its partial focus on visual sense or insufficient recognition about it. Jeonju, the place of sound, has many festivals and great meetings related with sound but it has not identity in the sense of sound. So the purpose of this study is to suggest the condition of sound which has the trait of Jeonju and to provide data for the trait to be used as a necessary element to establish identity in order to activate regional image. For the method of research, sampling Korean beautiful 100 sounds among the natural sounds of residents. most favorite as the samples of sound to search the sound of regional image. Selecting favorite samples among them and analyzed the factors through the questionnaire on the image of adjective in each sample. As the result of analysis, it has been shown that the factor of sound to reveal trait of Jeonju is the image of bright, delight, and cozy with consideration of harmony, dynamics, contrast, and culture. For this study is to provide data so it can be used to actively establish and identify the local image.