• The Journal of the Korea Contents Association
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• v.15 no.3
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• pp.1-10
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• 2015

Generating chord score based on melody is essential for composition and arrangement, while it is picky for amateurs who do not have harmonics knowledges. To solve this problem, we developed automatic chord score generating program, ACGP. Based on genetic algorithm, it successfully reflects diverse hormonic factors and the mood of the music. User interface was also implemented so that anyone can use the program conveniently. Additional analysis was conducted to prove the utility of ACGP.

• Speech Sciences
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• v.15 no.3
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• pp.145-156
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• 2008

The goal of this study was to investigate acoustic and physiologic characteristics of two phonation types of 'Khoomei' which is a traditional singing style of people who live around the Altai mountains or Mongolia region. It can be produced two pitches simultaneously - high melody pitch can be perceived along with a low drone pitch. Sygyt and kargyraa styles are the most popular and identifiable styles and they can be recognized as the different sounds depending on the method of voice production. Two trained Mongolians participated and have used at least 5 - 6 years. The characteristics of this voice production were measured by using flexible fiberscope, Stroboscopy, Lx Speech studio, Spead, and Doctor Speech. In Sygyt style, very high vocal fold closure (71.50%) with both true and false vocal folds contact and strong breathing support was observed. They also showed that tongue height and harmonics were increased (around 10dB) with resonance cavity movement. In contrast, it was found that Kargyraa sound had very low pitch with relaxed stomach, less laryngeal tension and lower vocal fold contact (69.50%) than hard Sygyt style sound without raising the tongue during phonation. 'Khoomei' phonation can be made by strong contact of both true and false vocal folds and by increasing the harmonics as well.

• The Research Journal of the Costume Culture
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• v.13 no.1
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• pp.87-101
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• 2005

Jazz derived from the blacks' work songs and made the frame of Jazz reaching blues and finally arrived at the recent time propagating itself as not only the blacks' music but all human being's music. This study has a purpose to suggest the Jazz image to the fashion design by examining the historical trace of Jazz which is one of popular music received by hearing sense. As for the result of the Jazz's effects by age, rhythmical beauty stressing dresses were in fashion by dance enjoying women in 1920's and dresses giving a mature atmosphere set the fashion in 1930's. in the beginning of 1990's, newly emerging Jazz was reflected to the popular culture along with the historical mode's fashion in the general society. The design's decided with two themes of Jazz Classic and Neo Fusion to modernly and naturally express the pursuit of strong color contrast which associated fast rhythm and lax image such as the counter melody of smooth Jazz. In that result, Jazz image with auditory feelings could suggest the various design motive and new idea to fashion design.

• Journal of KIISE
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• v.43 no.10
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• pp.1073-1078
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• 2016

(${\delta}$, ${\gamma}$)-matching for strings over integer alphabets can be applied to such fields as musical melody and share prices on stock markets. In this paper, we define ${\delta}$-approximate periods and ${\gamma}$-approximate periods of strings over integer alphabets. We also present two $O(n^2)$-time algorithms, each of which finds minimum ${\delta}$-approximate periods and minimum ${\gamma}$-approximate periods, respectively. Then, we provide the experimental results of execution times of both algorithms.

• The Journal of the Acoustical Society of Korea
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• v.22 no.4E
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• pp.141-149
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• 2003

As music of digital form has been widely used, many people have been interested in the automatic extraction of natural information of music itself, such as key of a music, chord progression, melody progression, tempo, etc. Although some studies have been tried, consistent and reliable results of musical information extraction had not been achieved. In this paper, we propose a method to extract chord and tempo information from general polyphonic music signals. Chord can be expressed by combination of some musical notes and those notes also consist of some frequency components individually. Thus, it is necessary to analyze the frequency components included in musical signal for the extraction of chord information. In this study, we utilize a sinusoidal modeling, which uses sinusoids corresponding to frequencies of musical tones, and show reliable chord extraction results of sinusoidal modeling. We could also find that the tempo of music, which is the one of remarkable feature of music signal, interactively supports the chord extraction idea, if used together. The proposed scheme of musical feature extraction is able to be used in many application fields, such as digital music services using queries of musical features, the operation of music database, and music players mounting chord displaying function, etc.

• The Transactions of the Korea Information Processing Society
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• v.6 no.5
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• pp.1177-1188
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• 1999

Continuing advance in computers and MIDI devices has accelerated research on the computerized music technology, Realization of high speed computer communication networks facilitated on-line computer music systems, which needs to send a volume of multimedia data. This paper presents the design and implementation of the Remote Concert Education System which helps users practice ensemble without gathering in a room. The system maintains the music database, identifies tones and measures of the melody played with different instruments, check the correctness on-line, and finally provides the analysed results of the ensemble. The developed system can be used as a supporting system for music education if high speed communication network is available.

• Journal of Satellite, Information and Communications
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• v.8 no.2
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• pp.1-5
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• 2013

Recently, the spread of a variety of electronic card is using as credit cards, transportation cards, passports, driver's licenses, public phone card, and etc. LED smart cards need to raise application technique because variety of LED smart cards increasing supply and usage. in this paper, we propose a LED smart card contained inside the card that piezoelectric method flexible Ultra-thin speaker. and a melody flows when User using the LED smart card.. Therefore we are verified to useful through develop to electronic card that was designed system circuit and implemented circuit add in ultra-thin flexible Speaker based on piezoelectric.

• Journal of KIISE:Computing Practices and Letters
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• v.15 no.12
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• pp.923-927
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• 2009

The recent growth of a digital music market induces increasing demands for music searching and recommendation services. In order to improve the performance of music-based application services, the process of extracting melodies from polyphonic music is essential. In this paper, we propose a method to extract melodies from piano solo music which is highly polyphonic and has a wide pitch range. We categorize piano music into three classes taking into account the characteristics of music, and extract melodies according to each class. The performance evaluation for the implemented system showed that our method works successfully on a variety of piano solo music.

• CELLMED
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• v.8 no.4
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• pp.21.1-21.2
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• 2018

The aim of this article is to argue that repeated singing helps to feel 'misery loves company.' Folksong is popular music in the past. Korean folk songs have almost repetitive chorus. The repetitive refrain is made easy for everyone to follow. So, people become comrades who share the chorus together. Repetitive music makes people more intimate and more intimate. So, people feel that they share thoughts and feelings with music. It gives me energy to never give in to destiny. So, they encourage each other to be worth living. They sing together and sympathize and comfort each other's pain. 'Hook song' is the most popular form in these days in Korean music. The form of K-pop (Korean pop), which is gaining popularity worldwide, has many repetitions and concentration of melody. BTS (Bang Tan Sonyundan, Boyband) also tells teens around the world through repetitive melodies that "Let's share our joy and sorrow." This is the highest value of music therapy. BTS is a Korean boy band that has gained a worldwide reputation. Recently, their songs are affecting teenagers all over the world. In this way, the author thinks that the repetition of folk songs was reborn as a 'Hook song' and the repetitive form of music is a good way to give support to anyone. The author thinks this is best accomplished by singing 'misery loves company.'

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.10a
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• pp.171-172
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• 2009

Nowadays the music market is getting bigger while students are losing their creativity because of the cramming education even in the music class. Based on the growing music market, we made a project for students to play the musical instruments more easily. The suggested program is different from any other system because, with this program, we can play the musical instruments if only we have a keyboard made of paper and Webcam, which made us save money. When an user put his finger on the paper keyboard, Webcam makes a sound recognizing the position of the finger on the keyboard. We can choose one instrument out of four; Piano, drum, base and guitar. With this system, we can get an opportunity to learn many sounds of musical instruments and make our own melody.