| Ayers, R. D., Eliason, L. J., and Mahgerefteh, D. (1985). The conical bore in musical acoustics. American Journal of Physics, 53(6):528-537. |
....which preserves the control structure is to insert a unit sample delay in the loop to make it implementable. However, this generally degrades the frequency response at high frequencies. Conical Bores To a rst approximation, a truncated cone can be regarded as a cylinder open on both ends [Ayers et al. 1985]. To make a more precise model, the phase shift between traveling pressure and velocity needs to be taken into account, or, equivalently, the imaginary part of the wave impedance needs to be modeled [Benade 1988] Digital waveguide models have been derived for conical bore instruments [Smith 1991, ....
Ayers, R. D., L. J. Eliason, and D. Mahgerefteh. 1985. \The Conical Bore in Musical Acoustics." American Journal of Physics, 53(6):528-537.
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Ayers, R. D., Eliason, L. J., and Mahgerefteh, D. (1985). The conical bore in musical acoustics. American Journal of Physics, 53(6):528-537.
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