• The Journal of the Korea institute of electronic communication sciences
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• v.16 no.1
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• pp.89-94
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• 2021

In this paper, we presented the results of analysis with data obtained through EEG measurements to confirm the effect of musical stimulus when performing mathematical tasks. While the subject was solving a mathematical task, favorite and unfavorite music classified according to the subject's preference were presented as musical stimulus and the tasks were divided into memorization task and procedure task. The data measured in the EEG experiments was divided into theta waves, SMR waves and mid-beta waves which are the frequency bands related to concentration to compare the relative power spectrum values. In our results, in the case of comparing no music with favorite music and no music with unfavorite music, a significant difference was observed in the several channels, and the average difference was shown in the channels F3 and F4 of the frontal lobe. In that channels, the power was found to be greater when the music was presented than the case where there was no music. Depending on the subject's preference, it was confirmed that favorite music showed greater brain activity than unfavorite music.

• Cartoon and Animation Studies
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• s.49
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• pp.589-610
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• 2017

This study aimed at examining the music world of the composer Muczynski, who played an important and meaningful role in the various experimental trends of music which began to appear in the early $20^{th}$ century, and his works, thereby understanding his relationship with the development of music of various genres today. In the study, his pieces of piano music among his works, which formed the basis for his music, were analyzed. The study examined stylistic characteristics, that is techniques of various types including form, melody, harmony, tonality, rhythm and structure, and introduced the composer's growth in terms of music and philosophical background. Muczynski, the composer who showed the characteristics of neoclassicism, neoromanticism and neobaroque in contrast to the various forms of the $20^{th}$ music, namely music of free styles including atonal music, twelve-tone technique, avant-garde music and electronic music, used traditional forms. However, the characteristics of his works are very free. In addition, in the 1960s, he participated in the production of documentary movie music, creating very creative and sensational music. Muczynski's music has the features of tonality and shows neoclassic and neoromantic features including economical idea, lyrical melody, bitonality and nine-note scale. His music, therefore, is being evaluated as very creative and valuable and is largely significant in that it has provided a good basis for the development of modern movie music and jazz music today.

• 정보화사회
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• s.175
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• pp.20-21
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• 2005

MP3폰이 카메라폰에 이어 휴대폰 시장의 차세대 주역으로 떠오르고 있다. 삼성전자, LG전자, 팬택, SK텔레텍 등 단말기 제조사들이 첨단기능을 갖춘 MP3폰을 선보이고 있다. 최근에는 이동통신사들도 가세해 MP3폰 이용자들을 위한 음악 서비스를 강화하고 나섰다. 이런 추세라면 기존 음악 시장을 주도하고 있는 MP3 플레이어를 대체할지도 모른다는 전망이 조심스럽게 나오고 있다.

• The Journal of the Korea institute of electronic communication sciences
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• v.14 no.3
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• pp.607-612
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• 2019

In this paper, we measured and analyzed the EEG signals related to the relativity between musical stimuli and human concentration for memorization. In our experiments, the subjects carried out the tasks related to human memorization exposing to musical stimuli and the tasks are to memorize the english words. We used two kinds of musical stimuli, one is a sedative tendency music and the other is a stimulative tendency music. We presented the results that are analyzed as the EEG signals by frequency bands, respectively.

• Journal of Digital Convergence
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• v.13 no.8
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• pp.51-57
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• 2015

Digital braille music is an indispensible instrument for the blind persons to enjoy music and to proceed the more professional music education. Producing braille music requires professionals such as braille translators thereby it costs money for an individual to order braille music. Therefore, public libraries involve in producing and distributing braille music. Current status of digital braille music in Korea has been far from the fulfillment with the unmet needs of the blind people for diversity in their music preferences. This paper analyses the present condition of braille music possession in Korea National Library. Based on the analysis, policy proposals has been proposed.

• The Journal of the Acoustical Society of Korea
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• v.27 no.6
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• pp.319-324
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• 2008

In this paper, we propose a novel approach to improve the performance of speech/music classification for the selectable mode vocoder (SMV) of 3GPP2 using the discriminative weight training which is based on the minimum classification error (MCE) algorithm. We first present an effective analysis of the features and the classification method adopted in the conventional SMV. And then proposed the speech/music decision rule is expressed as the geometric mean of optimally weighted features which are selected from the SMV. The performance of the proposed algorithm is evaluated under various conditions and yields better results compared with the conventional scheme of the SMV.

• Proceedings of the IEEK Conference
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• 2001.09a
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• pp.525-528
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• 2001

본 논문은 음성 및 음악을 위한 새로운 4kbps 다중 모드 하모닉 변환 여기 부호화 방법을 제안한다. 제안된 부호화방법은 음성/음악 분류기에 의해 분류된 신호를 각각 하모닉-잡음 여기모델과 MLT 여기모델로 부호화한다. 하모닉-잡음 여기모델에서는 전이구간과 유/무성음 혼합신호의 모델링오차 개선을 위해 MP(Matching Pursuit)방법과 혼합된 잡음스펙트럴을 표현하기 위한 캡스트럽 LPC 잡음 모델, 빠른 정현파 합성법을 제안한다. 음악에서는 비트할당 효율을 높이기위한 LP 적응 피크 분석을 적용한 MLT(Modulated Lapped Transform) 부호화 방법을 제안한다. 제안된 방법을 적용한 4kbps 음성부호화 방법은 전이구간에서의 향상된 모델링 구조를 보여주었으며, 주관적음질 평가 8kbps QCELP 보다 MOS 0.2 정도 향상된 결과를 얻었다.

• Journal of the Institute of Electronics Engineers of Korea SP
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• v.47 no.5
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• pp.89-99
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• 2010

A unified method for separating musical sources, singing voice for example, from stereophonic mixtures is provided. We usually have two observed signals in stereophonic music contents, where more than two instruments are played together. If we regard each instrument as source, this problem becomes an underdetermined source separation problem and cannot be solved by conventional methods, which infers the spatial environment of the downmixing process happens. Instead, source-specific information has been exploited to recover a particular instrumental source. This paper provides a unifying structure consists of heterogenious ad-hoc separate algorithms, which are designed for separating vocal sources using stereophonic channel information and dominant pitch information of the sources, respectively. Experiments on real world music contents show that the proposed unification can neutralize the drawbacks of the two ad-hoc separation algorithms and finally enhance the separation results.

• Proceedings of the CALSEC Conference
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• 1999.11a
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• pp.601-620
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• 1999

인터넷으로 인해 고객, 공급자, 기업 등이 상호작용하는 방식이 변화되고 있다. 인터넷은 새로운 사업 기회를 제공하는 한편, 새로운 경쟁적 위협을 암시하고 있다. 인터넷으로 인해 기업은 고객, 공급자, 제휴 파트너 등과의 관계를 재정의함은 물론이고, 기업 내부의 작업방식, 부서간의 장벽을 없애고 그 기능을 재정의하기에 이르고 있다. 가상사회에서는 더 이상 소비자가 전화로 음악 CD나 사전을 주문하고 지로로 입금을 하고 택배로 제품을 수령하는 방식으로 사업이나 거래가 이루어지지 않는다. 소비자는 인터넷에 접속하여 원하는 주제의 음악이나 사전의 한 부분만을 주문하고 신용카드나 전자화폐로 대금을 지불하고 자신의 컴퓨터에 직접 제품을 내려받아 사용하게 된다. (중략)

• Proceedings of the Korea Information Processing Society Conference
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• 2003.11c
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• pp.1403-1406
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• 2003

XML이 가지는 다양한 장점을 이용하기 위해, 음악을 XML로 표현하려는 다양한 연구가 계속되고 있다. 그러나, SMDL, MNML, MusicXML과 같은 기존의 연구는 악보상의 정보를 그대로 표현하거나, 전자 음악의 표준인 MIDI 포맷과의 상호교환성을 중심으로 연구되어 왔기 때문에 음악에 대해 구조-내용 기반 복합 검색을 하기에는 부적합하다. 이를 해결하기 위해 본 논문에서는 음악의 대표 선율을 이용한 구조-내용 기반 복합 검색을 위한 XML 스키마를 제안한다. 먼저, 본 논문에서는 사용자가 질의할 가능성이 높은 첫 동기, 절정, 일정 유사도 내에서 반복되는 주제 선율을 해당 음악을 대표하는 선율로서 XML 스키마에 표현하였다. 제안한 XML 스키마에 대해 XML 질의 언어를 이용하여 구조-내용 기반 복합 검색시 전체 선율을 검색하지 않고 대표 선율만을 검색하여 사용자의 응답 시간을 빠르게 할 수 있다.