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Measures and parameter estimation of triodes, for the real-time simulation of a multi-stage guitar preamplifier

Abstract : This paper deals with the real-time simulation of a multi-stage guitar preamplifier. Dynamic triode models based on Norman Korens model, and "secondary phenomena" as grid rectification effect and parasitic capacitances are considered. Then, the circuit is modeled by a nonlinear differential algebraic system, with extended state-space representations. Standard numerical schemes yield efficient stable simulations of the circuit, and are implemented as VST plug-ins. Measures of real triodes have been realized, to develop new triode models, and to characterize the capabilities of aged and new triodes. The results are compared for all the models, using lookup tables generated with the measures, and Norman Korens model with its parameters estimated from the measures.
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https://hal.archives-ouvertes.fr/hal-00631747
Contributor : Ivan Cohen <>
Submitted on : Thursday, October 13, 2011 - 10:22:07 AM
Last modification on : Thursday, March 21, 2019 - 1:01:02 PM
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  • HAL Id : hal-00631747, version 1

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Ivan Cohen, Thomas Hélie. Measures and parameter estimation of triodes, for the real-time simulation of a multi-stage guitar preamplifier. 129th Convention of Audio Engineering Society, Nov 2010, San Francisco, United States. ⟨hal-00631747⟩

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