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http://dx.doi.org/10.7776/ASK.2010.29.3.191

Implementation of Parallel Processor for Sound Synthesis of Guitar  

Choi, Ji-Won (울산대학교 컴퓨터정보통신공학부)
Kim, Yong-Min (울산대학교 컴퓨터정보통신공학부)
Cho, Sang-Jin (울산대학교 전기전자정보시스템공학부)
Kim, Jong-Myon (울산대학교 컴퓨터정보통신공학부)
Chong, Ui-Pil (울산대학교 컴퓨터정보통신공학부)
Publication Information
The Journal of the Acoustical Society of Korea / v.29, no.3, 2010 , pp. 191-199 More about this Journal
Abstract
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).
Keywords
Sound synthesis; physical modeling; guitar; SIMD parallel processor; digital waveguide;
Citations & Related Records
Times Cited By KSCI : 5  (Citation Analysis)
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