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http://dx.doi.org/10.3745/KIPSTA.2011.18A.1.001

Multi-Core Processor for Real-Time Sound Synthesis of Gayageum  

Choi, Ji-Won (울산대학교 컴퓨터공학과)
Cho, Sang-Jin (울산대학교 BK21 e-Vehicle연구인력양성사업단)
Kim, Cheol-Hong (전남대학교 전자컴퓨터공학부)
Kim, Jong-Myon (울산대학교 컴퓨터정보통신공학부)
Chong, Ui-Pil (울산대학교 컴퓨터정보통신공학부)
Publication Information
The KIPS Transactions:PartA / v.18A, no.1, 2011 , pp. 1-10 More about this Journal
Abstract
Physical modeling has been widely used for sound synthesis since it synthesizes high quality sound which is similar to real-sound for musical instruments. However, physical modeling requires a lot of parameters to synthesize a large number of sounds simultaneously for the musical instrument, preventing its real-time processing. To solve this problem, this paper proposes a single instruction, multiple data (SIMD) based multi-core processor that supports real-time processing of sound synthesis of gayageum which is a representative Korean traditional musical instrument. The proposed SIMD-base multi-core processor consists of 12 processing elements (PE) to control 12 strings of gayageum in which each PE supports modeling of the corresponding string. The proposed SIMD-based multi-core processor can generate synthesized sounds of 12 strings simultaneously after receiving excitation signals and parameters of each string as an input. Experimental results using a sampling reate 44.1 kHz and 16 bits quantization show that synthesis sound using the proposed multi-core processor was very similar to the original sound. In addition, the proposed multi-core processor outperforms commercial processors(TI's TMS320C6416, ARM926EJ-S, ARM1020E) in terms of execution time ($5.6{\sim}11.4{\times}$ better) and energy efficiency (about $553{\sim}1,424{\times}$ better).
Keywords
SIMD-Based Multi-Core Processor; Application-Specific Processor; Sound Synthesis; Physical Modeling; Digital Waveguide; Gayageum;
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Times Cited By KSCI : 7  (Citation Analysis)
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