• International Journal of Quality Innovation
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• v.6 no.3
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• pp.204-215
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• 2005

This paper explores innovative manufacturing processes, which can be used to manufacture the national musical instrument of Trinidad and Tobago, the Musical Steel Drum or Steel Pan. The main manufacturing process used today is the manual hand-forming technique. In order to achieve more consistent and deeper formed components while maintaining the high quality of the instrument, it is proposed that the Marforming process and the Flow-forming process, an adaptation of the Spinforming process, be used more frequently in the future to replace the traditional Hand-forming method. In the traditional Spinforming technique material is pushed from the outer circumference of the metal disc to the center in progressive passes of the former. This results in a thinning of the outer region of the formed component with thickening of the center, however the opposite is required for the musical steel drum and by adapting the process the required strain distributions were achieved. Evaluation took the form of strain analyses of pre-formed steel drums and visual inspection of the quality of the surface finish. It was found that the Marformed components had the smallest range of strain values while the Spinformed components had the largest range.

• 한국HCI학회:학술대회논문집
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• 2008.02b
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• pp.405-410
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• 2008

There is always a rhythm in our language and speech. As soon as we speech out, even just simple words and voice we make are edited as various emotions and information. Through this process we succeed or fail in our communication, and it becomes a fun communication or a monotonous delivery. Even with the same music, impression of the play can be different according to each musician' s emotion and their understanding. We 'play' our language in the same way as that. However, I think, people are used to the variety, which is, in fact, the variation of a set format covered with hollow variety. People might have been living loosing or limiting their own creative way to express themselves by that hollow variety. SPACIAL POEM started from this point. This is a new type of 'real-time visual interaction' expressing our own creative narrative as real-time visual by playing a musical instrument which is an emotional human behavior. Producing many kinds of sound by playing musical instruments is the same behavior with which we express our emotions through. There are sensors on each hole on the surface of the musical instrument. When you play it, sensors recognize that you have covered the holes. All sensors are connected to a keyboard, which means your playing behavior becomes a typing action on the keyboard. And I programmed the visual of your words to spread out in a virtual 3D space when you play the musical instrument. The behavior when you blow the instrument, to make sounds, changes into the energy that makes you walk ahead continuously in a virtual space. I used a microphone sensor for this. After all by playing musical instrument, we get back the emotion we forgot so far, and my voice is expressed with my own visual language in virtual space.

• Journal of Digital Contents Society
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• v.12 no.4
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• pp.575-583
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• 2011

Due to the development of mobile devices and communication technology, cell phones have radically evolved from portable phones into smartphones and provided variety of services to a society. This paper presents Multi-user Musical Instrument application for smart phones based on band instruments such as piano, guitar, bass guitar, and drum. This application makes music playing from smartphone to integrative music data stream using the synchronization function of server. In addition, user can play it of smartphone efficiently by implementing a graphic user interface similar to real musical instruments.

• (The) Research of the performance art and culture
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• no.35
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• pp.441-470
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• 2017

This paper deals with three issues related to influx and change of the Confucian Shrine Ritual Music. First, the musical instrument of the Akhakgwebeom-wooden frame-form used in the current Confucian Shrine Ritual Music is not a form that came in when the Daesung-Aak of the Song Dynasty was introduced in 1116, but it is a Yuan Dynasty form brought from the Ming Dynasty, in the 19th year of King Kongmin. In the Song Dynasty of the Goryeo Yejong era, when Daesung-Aak came in, there was not yet 'Baeso', a musical instrument of the Akhakgwebeom form, which first appeared in the Yuan Dynasty. A new musical instrument named 'Baeso' appears with the 'So' in the later period of King Gongmin, and it is very likely that this 'Baeso' is the musical instrument of the present Akhakgwebeom form. Second, although the form of the 'So' in the Joseon Dynasty recorded in the Akhakgwebeom was followed by the Chinese one, but the pitch and arrangement are the one of the pitch of '12 Yul and 4 Cheongseong' and the arrangement of the pitch from left to right. Third, in the 1930s, the whole form was the same as that of the Akhakgwebeom, but there existed two types, which several pipes stick together or pipes fall apart. But since then, as seen in the musical instrument located at Kyungpook National University Museum and in instruments currently used in Confucian Shrine Ritual Music, only musical instruments exist which pipes fall apart. It is unclear for what reason and to what extent the 'So' were so transformed, but it would be appropriate to re-establish the form of the 'So' in the musical and historical point of view.

• Korean Journal of Child Studies
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• v.29 no.2
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• pp.125-137
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• 2008

This study used path analysis to investigate the effect of home environment and teacher variables on children's musical ability and attitudes. Participants were 235 children, their parents and 13 teachers of kindergartens located in G city in Gyeongbuk Province. Instruments were the Primary Measurement of Music Audiation(Gordon, 1986), the Music Teaching Efficacy Instrument(Riggs & Enochs, 1990), and questionnaires about children's musical attitudes, home environment and music activities. Results showed that teacher variables affected children's musical ability directly and indirectly and children's attitude affected their musical ability directly. Psychological and physical variables of the home environment affected children's musical ability and attitudes positively.

• Proceedings of the Korean Society of Computer Information Conference
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• 2013.07a
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• pp.381-383
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• 2013

This paper introduces what the interactive projection technology is, and how to use this technology to make a musical instrument. There have been many art works and business products completed by the interactive projection technology, but this technology seldom has been used in the musical field, so we want to make a simple instrument by interactive projection technology, and expect more people to develop this field in the future.

• Proceedings of the IEEK Conference
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• 2008.06a
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• pp.879-880
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• 2008

Music can give pleasure to people according to a rhythm, and Musical instrument can make various sounds according to quality of the lumber. A string instrument makes sound by strings so it feels very soft and a brass makes to feel a high pitched tone. A gayageum makes sound by oscillation which is transferred to a resonator when a string is touched. And this sound is very soft and faint. Therefore, in this paper, we researched sound properties of gayageum according to quality of the lumber of musical instrument. As the result of researches, we found that melody is affected by the annual ring of the resonance lumber.

• Communications of Mathematical Education
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• v.26 no.4
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• pp.339-349
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• 2012

Integer ratios 1:2:3:4 are very important in making eastern and western musical scales. Suggest an educational program of Mathematics in middle school which shows how to make an musical instrument and musical scales by Euclidean constructions. It explains for Mathematics how to make musical notes.

• KIISE Transactions on Computing Practices
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• v.21 no.4
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• pp.275-282
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• 2015

The Musical Instrument Digital Interface (MIDI) file format is a typical format for dynamic music that can be used not only for playing, but also for supporting dynamic music activity, such as musical instrument practice. However, almost all of the existing MIDI applications focus only on the playing features. In this paper, therefore, we implement a MIDI file play application that supports various dynamic features such as part-play repeating certain sections that the user wants, tone and speed control while playing a MIDI file, downloading MIDI files from a server, and lastly Digital Rights Management (DRM). By supporting these features, we are confident that our MIDI application will help users who wish to practice musical instruments to do so conveniently, while effectively protecting the copyright of their purchased MIDI files.

• Journal of Korea Entertainment Industry Association
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• v.13 no.7
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• pp.219-227
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• 2019

In this paper, we proactively looked at the structure and characteristics of each instrument in order to compare and analyze the sound colors of the western violin, chinese erhu and korean haegeum, which are representative bow string instruments. Also, many performers have simply been unable to fully explain how the violin is rich in pitch and the haegeum has a unique tone. Also, many performers thinks that violin sounds rich just because it has many overtones and have been unable to fully explain how haegeum makes unique tone. While previous research data show that most instruments are studied and published by analyzing their own frequencies or related cases of acoustic studies, this study provides a visual look how the harmonics composition, which determines musical instruments' timbres, consists of and suggests data specifically by analyzing each sound pressure of integer multiple overtones so that the structure of instruments' unique timbre can be understood. Based on this, we hope that it will be of considerable help to the development of virtual musical instruments of korean traditional instruments, which are relatively small compared to western virtual instruments, by reproducing instrument sounds through the synthesizers in the future.