• Journal of IKEEE
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• v.24 no.4
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• pp.1122-1128
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• 2020

Bandwidth Extension refers to restoring and expanding a narrow band signal(NB) that is damaged or damaged in the encoding and decoding process due to the lack of channel capacity or the characteristics of the codec installed in the mobile communication device. It means converting to a wideband signal(WB). Bandwidth extension research mainly focuses on voice signals and converts high bands into frequency domains, such as SBR (Spectral Band Replication) and IGF (Intelligent Gap Filling), and restores disappeared or damaged high bands based on complex feature extraction processes. In this paper, we propose a model that outputs an bandwidth extended signal based on an autoencoder among deep learning models, using the residual connection of one-dimensional convolutional neural networks (CNN), the bandwidth is extended by inputting a time domain signal of a certain length without complicated pre-processing. In addition, it was confirmed that the damaged high band can be restored even by training on a dataset containing various types of sound sources including music that is not limited to the speech.

• The Journal of the Acoustical Society of Korea
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• v.25 no.2
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• pp.78-87
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• 2006

In this paper. we propose an effective mask estimation scheme for missing-feature reconstruction in order to achieve robust speech recognition under unknown noise environments. In the previous work. colored noise is used for training the mask classifer, which is generated from the entire frequency Partitioned signals. However it gives a limited performance under the restricted number of training database. To reflect the spectral events of more various background noise and improve the performance simultaneously. a new Bayesian classifier for mask estimation is proposed, which works independent of other frequency bands. In the proposed method, we employ the colored noise which is obtained by combining colored noises generated from each frequency band in order to reflect more various noise environments and mitigate the 'sparse' database problem. Combined with the cluster-based missing-feature reconstruction. the performance of the proposed method is evaluated on a task of noisy speech recognition. The results show that the proposed method has improved performance compared to the Previous method under white noise. car noise and background music conditions.

• The Journal of the Acoustical Society of Korea
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• v.25 no.4
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• pp.191-196
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• 2006

Human tend to rely their information about the size of a space on vision. However, it might be a common experience to perceive a certain difference in spaces without any visual difference, in such spaces as rooms for music performance, multimedia environments with multiple sound sources, and car cabins, where auditory experiences have a certain importance. In the present work, apparent auditory room size was measured at different positions in a room through a series of listening experiments. Also, measurement of room acoustic parameters was carried out and their relationships with perceived auditory room size were analyzed. The results suggest that apparent auditory room sizes were largely dependent on musical clarity, distance between a source and a receiver, and sound pressure level at the listening position. Also, the results from acoustic preference test suggest that smaller apparent room sizes were preferred for listening to orchestral, cello and flute music. The relationship between apparent auditory room size and vocal music was found to be statistically insignificant.

• (The) Research of the performance art and culture
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• no.40
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• pp.269-305
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• 2020

Youngsan is generally known as Pansori Danga(短歌). However, the contents of 'Yeongsan' in 『Songnamjabji』 are different. In 『Songnamjabji』, Cho Jaesam explained the contents related to 'Youngsan' using three kinds of poems: Shin Kwangsoo's poem, Baegho Imje's poem, Kim Myeongwon's poem. First, 'Ujo Youngsan' appears in Shin Kwangsoo's poem. Shin Kwangsoo wrote the (1750) when Yoo Jinhan's 『Manhwajib(晩華集)』(1754) was published. It is difficult to see the 'Ujo Youngsan', which appears in Shin Kwangsoo's poem written in a time when Pansori was not widely known, as the Pansori Danga. Second, Jo Jaesam called the music in Baegho Imje's poem 'Youngsan Dodeueum'. In 'Youngsan Dodeueum', flute and 'Dodeuli rhythm' were used. This fact is connected with , an instrumental music. , also a Buddhist term, continued to be used in the palace as well as among the people. Third, Cho Jaesam introduced Kim Myeongwon's poem in 'Yeongsan' part and called it 'Taryeong.' At that time, the term 'Taryeong' referred to both Pansori and Jeongga(正歌). Later, in the 19th century, 'Youngsan' was recorded as a term for the Danga to loosen the neck before Pansori began in earnest. In other words, the early 'Yeongsan' recorded in 『Songnamjabji』 was a Buddhist term, referring to the music of the upper class Seonbi, such as , Gasa(歌詞) and Sijo(時調). In 1855, when 『Songnamjabji』 was written, 'Youngsan' was used as a term used to refer to both Changbu-Music and Gagaek(歌客)-Music, mixed with the term 'Taryeong'. And as Pansori became popular, the term 'Taryeong' came to be called 'Pansori' and 'Youngsan' was used to refer to Pansori Danga. Therefore, all the records of 'Youngsan' should not be interpreted as Pansori Danga. This situation is closely related to religious and social change. The policy of worshipping Confucianism and suppressing Buddhism rejected the term 'Youngsan' which had a Buddhist meaning. In the middle of Joseon Dynasty, when Buddhism was suppressed, 'Youngsan' and 'Taryeong' were mixed. As Buddhism regrown in the late Joseon Dynasty, with the advent of Pansori, the term 'Youngsan' seems to be newly resettled in the sense of Danga. Pansori appeared in the 19th century and 'Yeongsan' was used as a Danga. And the reason should be regarded as this social and religious change.

• (The) Research of the performance art and culture
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• no.22
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• pp.413-439
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• 2011

This study aims to look for the proper directions of following and developing Gyeonggi sinawi dance in the fashion of Kim Sukja by closely examining its kinds and patterns. First, its characteristics and education reality were investigated. Second, the seven kinds of Gyeonggi sinawi dance Kim Sukja allegedly handed down (according to the 121st Report of the Intangible Cultural Assets) were concretely examined. Third, the composition of each dance pattern was studied. Fourth, various beats used in Gyeonggi sinawi dance were revealed. The late Kim Sukja had outstanding artistic talent and ability in Gyeonggi sinawi dance movements, musical composition, gayageum accompanied singing, and pansori episodes. Behind her were master singer Kim Seokchang (grandfather), father Kim Deoksun (belonging to Hwaseong Artist Board), shaman-mother Jeong Gwiseong, and great dancer Jo Jinyeong. Kim sukja's seven Gyeonggi sinawi dance types were bujeong nori, teo beollim, jinsoe, jeseok, kkaekkeum, ollimchae, and dosal puri (designated as Important Intangible Cultural Asset in 1990). Such beats as seopchae (dosal puri), mori, bal ppeodeurae, bujeong nori, ollimchae, jinsoe, and teo beollim (ban seoreum) were mainly used in Gyeonggi sinawi dance. In sum, Kim Sukja's dance was more than an individual's dance to represent the cultural types and life at that time in Gyeonggi-do and be a very important academic historic material. Therefore, it is the responsibility of the present generation to hand down and develop such invaluable traditional cultural materials.

• Sijohaknonchong
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• v.22
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• pp.143-171
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• 2005

Sip and Byul-Gok (New tunes), as folks musics, are musical concepts opposite to that of the Court musics. They have the tunes. typical and universal. and Byul-Gok for singing. has the words in which the properties of melodies in the structures of compositions are reflected harmoniously. The Song. or Shiga. in Koryo-Sa, History of Koryo. Acjee and Acjanggasa. named ByulGok. is divided into two types. according to the characteries of the forms.: Koryo Sokyo. or the folk songs in Koryo. such as Chengsanbylulgok. and Segyoungbyulgok. and Kyonggichega, or nobility songs in Koryo and Chosen Dynasty. such as Hallimbyulgok. Kwandongbyulgok. and Jucgyebyulgok. In addition. Gasa. or the nobility and folk songs in Chosen Dynasty. such as K wandongbyulgok. also has the title. Byul-Gok. Even though these types of the songs have the same tittle. Byul-Gok, it is not appropriate that Byul-Gok is used as a term described as a branch of the literature: in light of music. they have the properties in common in the sense that they are opposite to the Court music. but. in light of literature. their forms are very different from one another. Therefore, it is appropriate that they are classified according to the characteristics of the forms, winters, the ideology of people who enjoy them, and periods: Sokyo, Kyonggichega, and Gasa. Byul-gok means not only the folks songs opposite to the court musics, but also the songs by setting words to the melodies present. Orignal tunes and their new tunes are not different musical compositions, but the same ones with the melodies which Korean acquired transcendentally. It is general tendency, at those times, that after compositions were made, words are set to them. Such words represent the politic thought in which courtesy and music are considered important. and the spirit with which the ruler and the people enjoy together.

• The Journal of the Korea Contents Association
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• v.5 no.5
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• pp.191-201
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• 2005

Traditional music not only reveals Korean culture to foreigners but also it enhances the pride of national identity for Koreans themselves. Objectives of this study are how can we encourage and appreciate traditional music to ordinary visitors (non-musicians). Music festivals could be a means to educate and captivate them towards the appreciation of Korean traditional music. For this purpose, this study checked the satisfaction level between local residents and domestic visitors(including foreigners) concerning music festival programs, and also proposed a practical implications to traditional music organizers. According to the result, local visitors' satisfaction level were higher than other domestic visitors. Visitors showed higher interest in the music instruments like a 'Gayageum' they are able to relate to, rather than with other traditional unfamiliar musical instruments. It is thus crucial to encourage students and ordinary citizens to interact with traditional music instruments so as to enhance the satisfaction levels of domestic visitors. Some practical implications for traditional music organizers are that it is recommendable to have more guides who have thorough knowledge of traditional Korean music and who is able to interpret festival programs in foreign languages for foreign visitors.

• Journal of the Korean Society of Clothing and Textiles
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• v.21 no.7
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• pp.1236-1246
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• 1997

본 연구는 1960년대 미국의 청년층에 의해 일어난 반문화적인 현상으로 인식되어온 동양문화의 도입, 특히, 인도문화가 청년문화 전반에 끼친 영향과 더 나아가 이러한 환경변화가 미국대학복식에 미친 영향을 알아보고자 하였다. 1960년대 미국청년문화에 나타난 인도 문화의 영향은 철학, 종교 대중음악 등 다방면에서 보여졌으며, 또한 복식의 형태에도 반영되었다. 복식학자들에 의한 단편적인 추론에만 그쳤던 이러한 복식의 현상을 본 연구는 문헌조사에 의한 객관적이고 과학적인 연구방법을 이용하여 입증하고자 시도하였다. Washington, D.C.와 San Francisco/Berkeley 지역에 위치한 7개의 대학교에서 1960년 부터 1975년 사이에 발행한 대학신문에서 연구자료를 수집하여, 체계적인 자료수집 및 분석을 위한 연구방법으로 사회과학분야에서 주로 사용되어 온 Content Analysis Method를 이용하였다. Content Analysis Method는 예비연구(preliminary study)의 결과를 기초로 인도 복식의 영향을 받은 미국대학복식의 형태를 크게 의복(clothes), 장신구(accessories), 직물(fabrics) 등의 3개 category로 분류하여, 다시 13개의 subcategory(kurta, midriff top, Nehru jacket/suit, Indian shirt/blouse/smock/dress, sari, Indian jewelry, Indian sandal, Indian urn, Indian bedspread. Indian embroidery, Indian print, madras, tie-dye)로 세분하였다. 복식의 형태에 의한 분류외에도, 대학신문의 광고나 기사에 실린 내용을 인도복식이 미친 엮향의 정보를 알아보기 위하여 Attribution information을 3 category(originated, attributed, connotated)로 분류하여 조사하였다. 더불어, 같은 문헌에 나타난 인도에서 도입된 4개의 주된 종교(Transcendental Meditation, Hare Krishna, Yoga. Divine Light Mission)의 빈도도 조사하였다. 본 연구의 결과는 13개의 가인도복식스타일(Indian style)의 Frequency(빈도), Attribution, Duration(기간)의 내응을 포함하는 표로 요약되었다. 또한, 연도별로 Indian style이 나타난 빈도의 Duration(기간)의 내용을 포함하는 표로 요약되었다. 또한, 연도별로 Indian style이 나타난 빈도의 합계와 연도를 축으로 하는 막대그래프를 작성하고 이 그래프에 Attribution Category의 내용도 함께 볼 수 있도록 정리하였다. 대학복식에 나타난 인도의 영향은 여성복식과 남성복식에 있어서 서로 유사점과 차이점이 보이는데, 인도의 영향이 여성복식에 있어서 그 빈도가 더 높고, 종류가 더 다양함을 볼 수 있다. 여성복식에 있어서는 12가지의 다양한 인도복식스타일이 나타났으며, 그중 가장 많이 보이는 스타일은 Indian Shirt/Blouse/Smock/ Dress이며, 그 뒤를 이어 Madras, Indian lowery등을 볼 수 있다. 남성복식애 나타난 7가지의 스타일 중에는 Madras가 가장 빈도가 높으며 그외의 스타일들은 그 빈도가 매우 낮음을 볼 수 있다. 인도의 영향의 정도 (Attribution Categories) 있어서는 여성과 남성복식 모두에 있어서 인도에서 직접 수입된(originated) item이 각각 전체의 90%와 81%를 차지하여, 인도복식의 영향은 받았으나 미국내에서 제작된(attributed and connotated) item 보다 휠씬 더 많은 수를 보였다. 인도복식스타일이 가장 많이 보여지는 시기(Peak period)는 여성과 남성복식에 있어 모두 1968년에서 1971년 사이로 공통점을 보였다. 이러한 결과는 미국 청년 문화에 전반적으로 나타났던 반문화적 현상과 동일한 시기로서, 이는 사회 현상이 복식에도 반영되고 있음을 알 수 있다. 또한 같은 시기의 대학신문에 나타난 인도에서 도입된 4 개의 종교 역시 1960년대 후반 부터 그 빈도가 증가하여 1970년에 리고의 빈도가나타낭으로서 앞의 결과를 뒷받침해 주고 있다. 본 연구에서는 Washington,D.C.와 San Francisco/Berkeley 지역의 대학신문만을 연구자료로 사용하였으나 앞으로는 새로운 연구 자료의 발굴과 연구대상을 타 지역으로 확대시키므로서 미국내 전체의 청년복식에 대한 이해를 증가시킬 수 있을 것이다.

• Child Health Nursing Research
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• v.20 no.2
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• pp.75-86
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• 2014

Purpose: The purpose of this study was to describe the components and content of nursing intervention studies on mother-infant interactions and to present strategies for future studies. Methods: Four electronic databases in the Korean language were searched to identify studies done between January 1998 and December 2011. The search yielded 145 articles. From these articles, 19 studies met the inclusion criteria. Results: Mother-infant interactions in these studies were found to include verbal and non-verbal communication basic for optimal growth and development of the child. Six kinds of interventions for mother-infant interactions were identified as follows: sensory stimulation, education program, whole body massage, kangaroo care, visiting support, and music therapy. Conclusion: Further studies with well designed clinical trials need to be done in the area of child nursing to provide evidence based data for the development of strategies to promote positive mother-infant interactions.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.12
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• pp.569-573
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• 2018

Music is composed of the sound of many instruments. Among them, the sound of the human voice naturally stands out to us and immediately connects with the listener. However, A lot of different steps go into perfectly mixing a vocal, but I'm going to focus on the most important step, equalization. In this paper, starting with the concept and the type of EQ for the requirements associated with the EQ's work and will know about when and how to use subtractive EQ, additive EQ during the recording and mixing process. EQ is one if the most important tools for mixing, especially when dealing with vocals. The control that EQ's offer allows you work, boosting and cutting to fit the vocal perfectly into the mix. The key to get a professional sounding vocal every time is to always keep in mind what you're trying to achieve stylistically and for it, using reference track is very effective. In addition to EQing, there are a variety of complex working steps such as compression, reverb, chorus, delay, adjusted for the effects of the work and harmonies of backing vocals and that are also very important task. The work of EQing is the beginning of the mixing process, among other things, need to be a detailed work throughout the consideration of the above points to its importance is greater relationship.