• Journal of the Korea Academia-Industrial cooperation Society
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• v.21 no.3
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• pp.237-245
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• 2020

Tropicália, which marked the beginning of Brazilian Popular Music (MPB), is a musical genre that originated in the Brazilian cultural movement and this arose in the late 1960s. The musicians who participated in this cultural movement delivered radical innovation by embracing the international music trend of the 60s, such as the Beatles phenomenon and the experimental and creative music of the electronic age. The music derived from this era incorporated the cannibalism of the Brazilian modernism cultural movement in the 1920s, and it presented a cultural consilience while maintaining the traditional Brazilian culture. In particular, the convergence of Tropicália with rock was especially prominent. As rock grew into the culture of resistance in both Britain and the United States, the convergent characteristic of Tropicália reflected the critical sociocultural view toward Brazil at that time. This paper focuses on the element of fusion of traditional Brazilian music and the rock music present in Tropicália. To present a case study, this paper selected music pieces by Caetano Veloso, the essential pillar of Tropicália, and examined each element through specific music analysis. This study aims to establish an academic foundation for third-world music and contributes to the development and creation of fusion music.

• Proceedings of the KAIS Fall Conference
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• 2012.05a
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• pp.49-51
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• 2012

클래식 음악만이 영화음악의 소스가 아니며, 이것은 작곡에서 최근에 생긴 변화도 아니다. 1906년에 '캐힐'이 텔하모니움을 발명하고 100년 이상이 지났으며, '피에르 쉐퍼'가 1948년에 뮤직 콘크리트를 시도한 이후 약 60년의 시간이 흘렀다. 사운드를 제어하는 기술과 장비는 하루가 다르게 변화하고 있으며, 대부분의 영화음악 작곡가들은 컴퓨터와 다양한 사운드 모듈을 통해 효과적이고 창의성 높은 다양한 소리를 만들어 내고 있고 이것은 그들의 강력한 작곡 도구이다.

• Proceedings of the KIEE Conference
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• 1999.11c
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• pp.724-726
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• 1999

We have developed a real time musical visualizing system works on PC with sound card and windows 95 or more. The system can extract some features of music signal and animate various screen -i.e wave, spectrum, simulated water jet - according to extracted features. We have used the system at the concert for the deaf and contributed for deaf to understand the music.

• International Journal of Contents
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• v.11 no.4
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• pp.1-6
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• 2015

In practice, the most important performance parameters for music information retrieval (MIR) service are robustness of fingerprint in real noise environments and recognition accuracy when the obtained query clips are matched with the an entry in the database. To satisfy these conditions, we proposed a conjoined fingerprint algorithm for use in massive MIR service. The conjoined fingerprint scheme uses interhash and intrahash algorithms to produce a robust fingerprint scheme in real noise environments. Because the interhash and intrahash algorithms are masked in the predominant pitch estimation, a compact fingerprint can be produced through their relationship. Experimental performance comparison results showed that our algorithms were superior to existing algorithms, i.e., the sub-mask and Philips algorithms, in real noise environments.

• Journal of Positioning, Navigation, and Timing
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• v.10 no.2
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• pp.131-137
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• 2021

The Angle-of-Arrival (AOA) estimation in real time is one of core technologies for the real-time tracking system, such as a radar or a satellite. Although AOA estimation algorithms for various antenna types have been studied, most of them are for the single-shaped array antenna suitable to the specific frequency. In this paper, we propose the cascade AOA estimation algorithm for the combined array antenna with Uniform Rectangular Frame Array (URFA) and Uniform Circular Array (UCA), with the excellent performance for various frequencies. The proposed technique is consisted of Capon for roughly finding AOA groups with multiple signal AOAs and Beamspace Multiple Signal Classification (MUSIC) for estimating the detailed signal AOA in the AOA group, for the combined array antenna. In addition, we provide computer simulation results for verifying the estimation performance of the proposed algorithm.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.18 no.5
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• pp.1237-1242
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• 2014

The functions of playing musics and multimedia have become essential in one device as a smart phone since the smart phone appeared. It is very convenient, but it contains controversial arguments about sound quality, so many smart phone users use the music player application. By using these music applications, people start to think about the relationship between music playing and sound quality. However, those applications are not perfect, so it is hard to choose a good application. This thesis is about the advantages of the sound quality of music player applications that are currently sold in Android Market through RightMark Audio Analyzer program, and plans to suggest android music player application system design by analyzing applications by covering disadvantages of these applications.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.39A no.5
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• pp.251-257
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• 2014

Digital RDA system is retransmit into the opposite direction of the incident signals. Digital RDA system have a disadventage that this system do not signal classification in multipath environment. because multipath signal is shown as vector sum of multipath signal, digital RDA system required complex signal process for multipath signal classification. In this paper, to solve these problem we propose hybrid digital RDA system which combination of the MUSIC algorithm and the digital RDA system. Proposed system has two modes. First mode is digital RDA mode. Secornd mode is digital beamforming mode. Digital RDA mode is used in situations where the less the impact of multipath. Digital beamforming mode is applied to multipath effects is greater. In secornd mode, we find optimal path using MUSIC algorithm. After than the proposed system uses only the optimal path. Through the proposed system in a multipath environment with digital RDA can be used to supplement a disadvantage.

• Information Systems Review
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• v.2 no.2
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• pp.217-229
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• 2000

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.8 no.2
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• pp.723-736
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• 2014

This paper proposes a matching engine for a query-by-singing/humming (QbSH) system with polyphonic music files like MP3 files. The pitch sequences extracted from polyphonic recordings may be distorted. So we use chroma-scale representation, pre-processing, compensation, and asymmetric dynamic time warping to reduce the influence of the distortions. From the experiment with 28 hour music DB, the performance of our QbSH system based on polyphonic database is very promising in comparison with the published QbSH system based on monophonic database. It shows 0.725 in MRR(Mean Reciprocal Rank). Our matching engine can be used for the QbSH system based on MIDI DB also and that performance was verified by MIREX 2011.

• The Journal of the Korea institute of electronic communication sciences
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• v.15 no.5
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• pp.849-856
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• 2020

The Angle-of-Arrival(AOA) information for an array antenna receiver is one of the important factors for estimating the location of specific signals and detecting signals efficiently, in various situations. The AOA estimator in the satellite environment can rapidly calculate the AOA information in the wide area, utilizing a planar (grid, circular) array antenna mounted on the satellite. Since the satellite receiver has the limitation of the array antenna size, the concentric circular (ring) array (CCA or CRA) antenna structure with comparatively small size but with multiple antenna elements is more efficient than the uniform circular array (UCA) structure, for the satellite environment. In this paper, we introduce a cascade AOA estimation algorithm based on CRA, consisting of CAPON and Beamspace MUSIC. In addition, we provide computer simulation examples for verifying the estimation performance of the cascade AOA estimation algorithm based on CRA and compare it to the case of UCA.