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Abstract |
A new family of wave-digital vacuum tube triode
models is presented. These models are inspired by the triode
model by Cardarilli et al., which provides realistic simulation of
the triode's transconductance behavior, and hence high accuracy
in saturation conditions. The triode is modeled as a single
memoryless nonlinear three-port wave digital filter element in
which the outgoing wave variables are computed by locally
applying the monodimensional secant method to one or two port
voltages, depending on whether the grid current effect is taken
into account. The proposed algorithms were found to produce a
richer static harmonic response, introducing comparable or less
aliasing and requiring approximately 50% less CPU time than
previous models. The proposed models are suitable for real-time
virtual analog circuit simulation.
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| Status |
Published in IEEE Transactions on Audio, Speech and Language Processing, vol. 21, no. 2, pp. 313-321, Feb. 2013.
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