Elimination of delay-free loops in discrete-time models of nonlinear acoustic systems

被引：59

作者：

Borin, G ^{[1
]}

De Poli, G ^{[1
]}

Rocchesso, D ^{[1
]}

机构：

[1] Univ Padua, Dipartimento Elettron & Informat, Ctr Sonol Computazionale, I-35131 Padua, Italy

来源：

IEEE TRANSACTIONS ON SPEECH AND AUDIO PROCESSING | 2000年 / 8卷 / 05期

关键词：

acoustic system modeling; Kirchhoff digital domain; noncomputable loops; nonlinear circuits; wave digital domain;

D O I：

10.1109/89.861380

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

Nonlinear acoustic systems are often described by means of nonlinear maps acting as instantaneous constraints on the solutions of a system of linear differential equations, This description leads to discrete-time models exhibiting noncomputable loops. We present a solution to this computability problem by means of geometrical transformation of the nonlinearities and algebraic transformation of the time-dependent equations, The proposed solution leads to stable and accurate simulations even at relatively low sampling rates.

引用

页码：597 / 605

页数：9

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