Derivation of a new banded waveguide model topology for sound synthesis.
Banded waveguide (BWG) synthesis is an efficient method for real-time physical modeling of dispersive and multidimensional sounding objects, affording simulation of complex interactions, such as bowing. Current implementations, however, use nonphysical design parameters and produce a range of outputs that do not match equivalently designed modal and digital waveguide (DWG) models. This letter proposes a new topology for implementing BWG models without arbitrary parameters. The impulse response of the proposed model is identical to that of equivalent Karplus-Strong type and lumped modal models. Test of a nonlinear bi-directional bowed-string model demonstrates improved attack characteristics relative to prior BWG models.
School of Arts, Media and Engineering, SenSIP Center, School of Electrical, Computer and Energy Engineering, Arizona State University, Tempe, Arizona 85287, USA. alex.fink@asu.edu
Alex M
AM
Fink
Andreas S
AS
Spanias
Perry R
PR
Cook
D000162:Acoustics; D003198:Computer Simulation; D008962:Models, Theoretical; D009038:Motion; D017711:Nonlinear Dynamics; D012815:Signal Processing, Computer-Assisted; D013016:Sound; D013018:Sound Spectrography; D013997:Time Factors; D014732:Vibration