• Broadcasting and Media Magazine
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• v.16 no.4
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• pp.59-71
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• 2011

오디오와 음성 압축 기술적 근간은 서로 다르지만, 최근의 모바일 멀티미디어 기기 시장의 컨버전스 현상에 따라 압축하고자 하는 신호가 혼용되고 있으며, 비슷한 목표 전송률과 음질로 수렴하고 있다. 현재는 동일 기기에서 서로 다른 압축 기술을 적용하고 있으나, 음성과 음악이 동시에 서비스 되는 멀티미디어 기기에서는 단일 압축 방식으로 처리하고자 하는 이슈가 부각되고 있다. 특히, 스마트 폰 및 음악 콘텐츠 포탈 서비스의 대중화를 고려할 때, 음성 및 음악 신호 모두를 효율적으로 압축하는 음악 및 음성 신호의 융합 압축 기술이 더욱 필요해 보인다. 본 고에서는 MPEG 오디오 그룹에서 가장 최근 진행한 Unified Speech and Audio Coding(USAC)의 탄생 배경 및 표준화 현황을 소개한다. USAC는 64kbps 이하에서 기술적으로 최고 성능을 지닌 AMR-WB+ 및 HE-AAC v2보다도 우월한 음질을 보이며, 높은 비트율에서도 동등한 음질을 보장한다. 이런 우수한 음질에 기여한 USAC의 스위칭 구조와 더불어 기술적으로 향상된 주요 모듈인 파라미터 기반 스테레오 및 고주파 압축, 그리고 엔트로피 코딩 방식에 대해서 살펴 본다. 향후, 다양한 오디오 신호를 효율적으로 압축하는 USAC는 디지털 라디오, 모바일 TV, 그리고 오디오 북과 같은 사용자 시나리오에서 사용될 확률이 높아 보인다. 또한, USAC는 배경 잡음이나 배경 음악이 있는 경우에도 성능이 우수하기 때문에 YouTube 및 podcast 등과 같이 사용자가 콘텐츠를 생성할 때도 유용하게 사용 될 수 있다.

• Journal of the Korean Society for Library and Information Science
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• v.32 no.2
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• pp.5-34
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• 1998

The purpose of this study is to develop an idealistic scheme for the classification of Korean music. The ideal classification of Korean music should cover as much knowledge and materials of Korean music as possible. In this study, therefore, Korean music, Korean musicology and music materials were examined first as the backgrounds. Then classification schedules for Korean music including 679 Korean music of KDC were selected, and their expansion aspects and the problems were analyzed. The conditions and the possibility of developing an ideal classification schedule of Korean music were sought through reanalyzing the problems found in these existing classification schedules. As the result of this study a new classification schedule of Korean music was proposed.

• Broadcasting and Media Magazine
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• v.16 no.4
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• pp.72-83
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• 2011

인터넷 환경의 대중화와 디지털 음원의 기하급수적인 증가에 따라, 음악을 시그널 레벨에서 직접 분석하여 분류하거나 의미정보를 추출하는 음악분석 및 검색 기술의 상용화에 대한 요구가 늘어나고 있다. Music Information Retrieval Evaluation eXchange(MIREX)는 음악 검색(Music Information Retrieval) 시스템과 알고리즘들의 평가를 위해 매년 개최되는 평가 대회이다. MIREX는 매년 정기적으로 대회 및 회의를 개최하면서 음악 분석 기술에 대한 관심도와 최신 기술동향 등을 보여주고 있다. 따라서, 음악 기술의 MIREX의 배경, 구성 및 현황 등을 살펴보면서 전 세계 음악분석 기술의 현황을 파악해 볼 수 있다. MIREX에 대한 소개와 MIREX에서 운영하는 task들의 현황을 설명하고, 이를 통하여 음악 분석 기술의 동향과 전망을 짚어본다.

• Proceedings of the Korea Information Processing Society Conference
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• 2013.11a
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• pp.468-470
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• 2013

현재 가장 활발히 이용되고 있는 음악 검색 서비스는 스마트폰의 앱(App) 형태로 사용자에게 배포되고 있다. 사용자는 스마트폰의 마이크에 자신의 주위에 들리는 음악을 직접 검색 소스로 입력함으로써 검색 작업을 수행한다. 일반 가정에서 사용자가 즉흥적으로 음악 검색을 수행하고자 하는 경우는 주로 TV 시청 중에 발생한다. 그러나 최근 널리 보급되고 있는 스마트TV의 하드웨어 및 소프트웨어 능력이 충분한 상황에서, 별도의 스마트폰을 이용하여 음악을 검색하는 것은 매우 비효율적이다. 따라서 본 논문은 사용자가 외부 검색 장비에 의존하지 않더라도, 스마트TV에서 자체적으로 현재 시청중인 영상에 삽입된 배경음악을 실시간으로 검색하여주는 서비스를 제안한다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2011.05a
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• pp.522-525
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• 2011

스트리밍 기술이란 전송되는 데이터를 마치 끊임없고 지속적인 물 흐름처럼 처리할 수 있는 기술을 의미한다. 멀티미디어 데이터의 각 블록이 원격 서버로부터 네트워크를 통해 클라이언트에 도착하는 즉시 재생을 시작하는 방식이다. 본 논문에서는 인터넷 스트리밍 기술을 이용한 배경음악 전송시스템을 제안한다. 이 시스템은 하나의 서버에서 여러 개의 음악 채널을 인터넷을 통하여 전송하고 다수의 클라이언트에서 각각 원하는 음악 채널을 선택하여 음악을 들을 수 있도록 한 것이다. 인터넷을 통하여 사용자가 원하는 최신 음악과 장르, 세대, 날씨 등에 맞는 음악을 선택할 수 있고 끊이지 않는 음악을 제공함으로서 사용자의 만족도를 높이고 불필요한 매체 구입비용도 절약할 수 있다.

• Journal of Digital Convergence
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• v.15 no.10
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• pp.411-417
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• 2017

This experimental research explores the effect of background music of TV documentary which can be classified as channel factor in the field of media effect, on audience's recall memory, flow, arousal of interest, evaluation of documentary. Most previous researches of media effect focused on the effect of sender factor and message factor on audience's memory, understanding, acquirement of knowledge, attitude, action. However the number of researches on the effect of background music on audience's various dependent variables is extremely limited, especially it is very difficult to find studies on the effect of background music of TV documentary on audience. Therefore this research tries to find the effect of background music of TV documentary on audience's recall memory, flow, arousal of interest, evaluation. For this research of experiment, 2 groups of subjects composed of 101 university students were exposed to 2 different video clips of TV documentary, one with background music, the other without it, After this experiment, Questions which were designed to measure audience's recall memory, flow, arousal of interest, evaluation were asked and analysed. This research found that background music of TV documentary increased audience's flow, degree of interest and raised evaluation, However meaningful effect of background music on audience's recall memory was not found.

• Science of Emotion and Sensibility
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• v.20 no.1
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• pp.83-94
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• 2017

In this study, we figured out that music modes and item types could affect people's urged decision making through a k-value which results from a delay discounting's hyperbolic function. Generally, high k-value is related to impulsive decision making. Concretely, there was a significant interaction between items and music. For the luxury item, the k-value was higher while listening to major music than minor. However, for the non-luxury item condition the k-value difference was not significant between two pieces of music. Moreover, we expected mood could be manipulated after listening to the music and mediate a difference of tendency. We used first movement as an allegro and second as an andante of Mozart piano concerto No.5 D-major and No.20 D-minor for stimuli. As a result, mode and tempo's main effects were not significant. Nevertheless, there was a significant two-way interaction. To put it concretely, the k-value of major condition was marginally higher than minor condition on allegro. However, the k-value of major condition was significantly lower than minor condition on andante. Also, depressed degree difference was significant but it was not significant as a mediator. Set depressed degree as a predict variable and future time span as a mediator, further research found future time perception partially mediated the effect that depressed degree affects impulsivity.

• Journal of Music and Human Behavior
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• v.7 no.1
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• pp.1-15
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• 2010

The purpose of this study is to inquire into the theoretical background of music therapy interventions for the improvement of mathematical concepts among young children with special needs. The researcher provides a basis of theoretical background about musical activities as an effective tool for young children to understand and promote their mathematical concepts, and the necessity of practical application in the field of mathematics education is suggested. Music, as a multi-sensory modality, has an ability to hold and maintain one's attention, and can be used as a memory aid and a powerful and effective motivator and reinforcer for young children. Therefore, musical activities can be used to facilitate mathematical concepts in the field of education for young children. Possible musical activities for promoting mathematical development are suggested, and the necessity for developing various musical activities is discussed.

• Journal of Broadcast Engineering
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• v.24 no.6
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• pp.1024-1034
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• 2019

Preference for music is determined by a variety of factors, and identifying characteristics that reflect specific factors is important for music recommendations. In this paper, we propose a method to extract the singing voice related music features reflecting various musical characteristics by using a model learned for singer identification. The model can be trained using a music source containing a background accompaniment, but it may provide degraded singer identification performance. In order to mitigate this problem, this study performs a preliminary work to separate the background accompaniment, and creates a data set composed of separated vocals by using the proven model structure that appeared in SiSEC, Signal Separation and Evaluation Campaign. Finally, we use the separated vocals to discover the singing voice related music features that reflect the singer's voice. We compare the effects of source separation against existing methods that use music source without source separation.

• Science of Emotion and Sensibility
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• v.14 no.1
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• pp.27-38
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• 2011

This study was aimed to investigate the effects of restaurant in-store color and music congruency on consumer's emotional responses and behavioral intentions. The web survey was conducted among 400 customers(aged from 20~39 years old) who lived in Seoul and Kyunggi, Incheon Province. To find ensemble effect of color and music, 3D studio MAX were used to make high-stimulus(exciting) and low-stimulus(calm) and 3D virtual reality restaurant simulation stimulus were applied. The statistical data analyses were performed using SPSS/WIN 18.0 and reliability analysis, factor analysis, regression analysis were used. Based on the result of the conducting factor analysis, emotional responses were classified into 2 factors: positive emotion and negative emotion. Satisfaction was classified into 1 factor: satisfaction. Loyalty was classified into 1 factor: loyalty. Cronbach's alpha was calculated for the reliability of the survey instrument. Consequently, restaurant in-store color and music congruency were shown to affect positive emotion and negative emotion. Positive emotion and negative emotion were shown to affect satisfaction. Satisfaction were shown to affect loyalty. Music congruency had a higher effect on positive emotion than color congruency. Color congruency had a higher effect on negative emotion than music congruency. The results of this study will serve as a basis of color and music congruency with restaurant atmospherics.