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Delay Characteristics and Sound Quality of Space Based Digital Waveguide Model  

강명수 (울산대학교 컴퓨터 정보통신공학부)
김규년 (울산대학교 컴퓨터 정보통신공학부)
Publication Information
The Journal of the Acoustical Society of Korea / v.22, no.8, 2003 , pp. 680-686 More about this Journal
Abstract
Digital waveguide model is a general method that is used in physical modeling of musical instruments. Wave motion is analyzed by time or by space in digital waveguide model. Because sampling is made via time, it is general that musical instrument model is described by wave motion of time. In this paper, we synthesized the musical instrument sound by adding instrument body model to the spatial based string model. In this way, we could improve sound quality and process musical instrument model's tone control variables effectively. We explained about delay error that happens in string and body in space based sampling and showed method to process fractional delay using FD (Fractional Delay)filter. Finally, we explained the relation between tone quality and number of delays. And we also compared the result with time base digital waveguide model.
Keywords
Physical modeling; Spatial sampling; Body modeling; Delay error; Fractional delay filter; Digital waveguides;
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