• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2007.06a
• /
• pp.357-358
• /
• 2007

• The Journal of the Acoustical Society of Korea
• /
• v.29 no.3
• /
• pp.191-199
• /
• 2010

Physical modeling is a synthesis method of high quality sound which is similar to real sound for musical instruments. However, since physical modeling requires a lot of parameters to synthesize sound of a musical instrument, it prevents real-time processing for the musical instrument which supports a large number of sounds simultaneously. To solve this problem, this paper proposes a single instruction multiple data (SIMD) parallel processor that supports real-time processing of sound synthesis of guitar, a representative plucked string musical instrument. To control six strings of guitar, we used a SIMD parallel processor which consists of six processing elements (PEs). Each PE supports modeling of the corresponding string. The proposed SIMD processor can generate synthesized sounds of six strings simultaneously when a parallel synthesis algorithm receives excitation signals and parameters of each string as an input. Experimental results using a sampling rate 44.1 kHz and 16 bits quantization indicate that synthesis sounds using the proposed parallel processor were very similar to original sound. In addition, the proposed parallel processor outperforms commercial TI's TMS320C6416 in terms of execution time (8.9x better) and energy efficiency (39.8x better).

• Proceedings of the KAIS Fall Conference
• /
• 2002.11a
• /
• pp.287-289
• /
• 2002

기타 네크의 정밀 제작은 정확한 음률을 만드는데 매우 필요하다 보다 정확한 2/sup -1/12/을 이용하여 플랫 간격을 정확하게 맞추고 음쇠의 양 끝을 개량하여 기타줄이 밖으로 밀려나가지 않도록 하였다.

• Proceedings of the KAIS Fall Conference
• /
• 2002.11a
• /
• pp.290-292
• /
• 2002

오랫동안 젊은이들의 각광을 받고 있는 전기 기타는 모양은 조금 바뀌었지만 픽업에서 얻은 음성 전류를 유선으로 증폭기로 보내는 방법을 그대로 사용하고 있다. 한편 연주자가 넓은 무대에 설 때는 증폭기 바로 앞에 서야하기 때문에 움직임에 제약이 있다. 이를 극복하기 위하여 기타에 송신기를 장착하고 앰프에 수신장치를 설치하여 연주자가 자유롭게 움직이며 연주할 수 있는 방안을 제기한다.

• The KIPS Transactions:PartB
• /
• v.17B no.2
• /
• pp.107-114
• /
• 2010

A guitar, a piano, and a violin are popular musical instruments for User Created Contents(UCC). However the patterns of audio signal generated by a guitar and a piano are too similar to differentiate. The difference between two musical instruments can be found by analyzing the frequency variation per each band near signal peaks. The distribution of probability on the existence of signal peaks based on Cumulative Histogram were applied to musical instrument recognition. Experiments with statistical models of the frequency variation per each band near signal peaks showed the 14% improvement of musical instrument recognition.

• Journal of the Korea Institute of Information and Communication Engineering
• /
• v.17 no.5
• /
• pp.1106-1112
• /
• 2013

Microsoft released motion sensing device named Kinnect on early 2010, which is available for developing Xbox 360 game and entertainment software. Also many third party libraries and applications are developed for Kinnect. In this paper, we studied and developed guitar rhythm game on Kinnect using three sensor units on it. Rhythm game is the most popular game genre for many game devices including PC, console device, and smart phone. The main reasons for their popularity depends on their simplicity, short learning time and physical activity with rhythms. We developed the game screen and layout on DirectX 11, also we used OpenNI library for recognize physical activity of gamer's body and fingers, and OpenGL for body gestures on the game.

• Proceedings of the KAIS Fall Conference
• /
• 2012.05a
• /
• pp.134-136
• /
• 2012

본 논문은 컴퓨터에서 사용 가능한 가상 악기 제작에 관한 연구이다. 가상악기는 전통적으로 사용되고 있는 악기를 디지털로 복원하는 것에서부터 지금까지 존재하지 않았던 새로운 악기를 창조하는 것에 이르기까지 그 사용과 쓰임이 매우 다양하다. 가상악기의 등장은 전통적인 음악제작의 틀을 유지하면서 보다 쉽고 빠르게 음원을 제작하면서도 창의적인 음악의 발전을 유도하는 장점을 가지고 있다. 본 논문은 기타(Guitar)의 한 음(미, E)을 녹음하여 컴퓨터에서 여러 음정으로 자유롭게 바꾸어 사용하고, 원음과는 전혀 다른 전자 바이올린 소리로 완성해 가는 과정에 대한 연구이다.

• Journal of Broadcast Engineering
• /
• v.22 no.2
• /
• pp.173-181
• /
• 2017

In this paper, we propose a musical instrument conversion based music ensemble application for smartphone. If we try to create ensemble music using virtual instruments provided by the conventional smartphone application, we should know how to play each instrument. In addition, it is impossible to play the instrument in a natural way if the smartphone screen cannot show the entire part of the instrument. To solve this problem, in this paper, we propose a smartphone application that records music sound by playing an acoustic guitar, converts it to other instruments' sound, applies effect to the converted sound, and creates a final ensemble music after mixing all sounds. Using the proposed application, the user can create ensemble music only by playing the acoustic guitar.

• The Journal of the Acoustical Society of Korea
• /
• v.25 no.6
• /
• pp.282-290
• /
• 2006

This paper proposes a new Digital Reverberator that models Analog Helical Coil Spring Reverberator for guitar amplifiers. While the conventional digital reverberators are proposed to provide better sound field mainly based on room acoustics, no algorithm or analysis of digital reverberators those model Helical Coil Spring Reverberator was proposed. Considering the fact that approximately $70{\sim}80$ percent of guitar amplifiers are still with Helical Coil Spring Reverberator, research was performed based not on Room Acoustics but on Helical Coil Spring Reverberator itself as an effector. After performing simulations with proposed algorithm, it was confirmed that the Digital Reverberator by proposed algorithm provides perceptually equivalent response to the conventional Analog Helical Coil Spring Reverberators.

• The Journal of the Acoustical Society of Korea
• /
• v.25 no.6
• /
• pp.291-297
• /
• 2006

This paper proposes a new Digital Reverberator that models Analog Helical Coil Spring Reverberator for guitar amplifiers. While the conventional digital reverberators are proposed to provide better sound field mainly based on room acoustics, no algorithm or analysis of digital reverberators those model Helical Coil Spring Reverberator was proposed. Considering the fact that approximately $70{\sim}80$ percent of guitar amplifiers are still with Helical Coil Spring Reverberator, research was performed based not on Room Acoustics but on Helical Coil Spring Reverberator itself as an effector. After performing simulations with proposed algorithm, it was confirmed that the Digital Reverberator by proposed algorithm provides perceptually equivalent response to the conventional Analog Helical Coil Spring Reverberators.