• The Journal of the Acoustical Society of Korea
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• v.35 no.2
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• pp.83-91
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• 2016

Music-similarity computation is crucial in developing music information retrieval systems for browsing and classification. This paper overviews the recently-proposed centroid-model based music retrieval method and applies the distributional similarity measures to the model for retrieval-performance evaluation. Probabilistic distance measures (also called divergence) compute the distance between two probability distributions in a certain sense. In this paper, we consider the alpha divergence in computing distance between two centroid models for music retrieval. The alpha divergence includes the widely-used Kullback-Leibler divergence and Bhattacharyya distance depending on the values of alpha. Experiments were conducted on both genre and singer datasets. We compare the music-retrieval performance of the distributional similarity with that of the vector distances. The experimental results show that the alpha divergence improves the performance of the centroid-model based music retrieval.

• The Journal of Korea Institute of Information, Electronics, and Communication Technology
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• v.9 no.1
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• pp.67-74
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• 2016

In this paper, we propose a watermarking technology for a mixed music. The mixed music means recreated music that contained a number of musics in one audio clip. Royalty associated with the audio content is typically imposed by the full audio content. However, the calculation of royalties gives rise to conflict between copyright holders and users in the mixed music because it uses not full audio content but a fraction of that. To solve the conflict related with the mixed music, we propose a audio watermarking technique that inserts different watermarks for each audio in the audio that make up the mixed music. The proposed watermarking scheme might have poor SNR (signal to noise ratio) to embed to each audio clip. To overcome poor SNR problem, we used inaudible pseudo random sequence which modifies typical pseudo random sequence to canonical signed digit (CSD) form. The proposed method verifies the performance by each watermark extraction and the time internal estimation valies from the mixed music.

• Proceedings of the Korean Magnestics Society Conference
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• 2008.12a
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• pp.297.1-297.1
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• 2008

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.1059-1062
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• 2009

As the electronic processing of music gradually is developed, there has been growing interest in automatical input of music. As a result, various researches which input music in the computer has been studied. However, previous studies have drawbacks that only the experts can do it. In other words, if beginners would like to use traditional production program of music scores than prior knowledge is required. To resolve this, we propose system painting music scores automatically using a bandwidth of soundsource, after extracting the voice sounds created by amateurs. The System provides amateurs with convenience so that they can compose. As well as, the System provides the ability to play music that produced by the computer. By using the system, amateurs can compose using voice and simple system handling. And, they can make a music that plays desired instruments.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2021.05a
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• pp.413-415
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• 2021

Piano is one of the most beloved instruments in the world and is used a lot for children to learn music because it is simple to play. As a result, various products for children, such as toy pianos, were released. However, there is a lack of piano skills for music education, such as how to play the piano or read the score. To solve this problem, in this paper, we propose a game-style educational piano using Arduino. It is expected to capture fun and education at a low price by scoring points by displaying the score on the LCD screen and pressing the keyboard according to the timing of playing the note.

• The Journal of the Acoustical Society of Korea
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• v.36 no.2
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• pp.144-150
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• 2017

Musical genre is indispensible in constructing music information retrieval system, such as music search and classification. In general, the spectral characteristics of a music signal are obtained based on a subband decomposition to represent the relative distribution of the harmonic and the non-harmonic components. In this paper, we investigate the subband decomposition parameters in extracting features, which improves musical genre classification accuracy. In addition, the linear projection methods are studied to reduce the resulting feature dimension. Experiments on the widely used music datasets confirmed that the subband decomposition finer than the widely-adopted octave scale is conducive in improving genre-classification accuracy and showed that the feature-dimension reduction is effective reducing a classifier's computational complexity.

• Journal of IKEEE
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• v.24 no.1
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• pp.254-259
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• 2020

This paper is the implementation of the conversion system from image to music based on intentional synesthesia. The input image based on color, texture, and shape was converted into melodies, harmonies and rhythms of music, respectively. Depending on the histogram of colors, the melody can be selected and obtained probabilistically to form the melody. The texture in the image expressed harmony and minor key with 7 characteristics of GLCM, a statistical texture feature extraction method. Finally, the shape of the image was extracted from the edge image, and using Hough Transform, a frequency component analysis, the line components were detected to produce music by selecting the rhythm according to the distribution of angles.

• The Journal of the Acoustical Society of Korea
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• v.27 no.1
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• pp.12-17
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• 2008

Taepyeongso was introduced from China during the end of the Goryeo period and was used widely in Daechwita (military processional music), Pungmul-nori (farmers music), Buddhist music, royal ancestral rite music, and Sinawi, the instrumental accompaniment to shaman dances. Now, It has been popular as it is used for pop music and it is easy to learn. In this paper, Taepyeongso was analyzed for electronic Taepyeongso using physical modeling. We extracted resonance properties of Taepyeongso through the analysis of Taepyeongso sound. We analyzed the bell, the bore and the mouthpiece using FFT and LPC curve. As a result, the bell could be represented 2 pole filter and reflection filter between bore and bell.

• The Journal of the Korea Contents Association
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• v.16 no.4
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• pp.335-346
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• 2016

This study aimed to review Korean-written and English-written studies on music intervention for older adults in terms of research variables and type of music application. Electronic databases and music-related journals were searched and a total of 40 studies, 19 Korean-written and 21 English-written studies, were included for analysis. The results showed that music intervention studies for older adults began to be conducted in Korea in the late 1990s and have continuously increased thus far, which is similar to studies overseas. Emotional area, especially depression, was targeted the most frequently in both studies in Korea and overseas. While singing of traditional folk song or popular music were applied the most in Korean studies, listening to classical music or relaxing music was primarily observed in studies overseas. While both studies in Korea and overseas used original music frequently, Korean-written studies used live music and showed tendency to select music based on preferences of participants more than studies overseas. These results indicate that growing population of older adults and increased needs for successful aging have been sufficiently reflected in studies on music-based intervention. Cultural and societal factors might affect the differences between studies in Korea and studies overseas. Future studies on music intervention considering cultural and societal needs of this population from multidimensional approach were also suggested.

• 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.