Further investigations in the emulation of nonlinear systems with Volterra series

被引：32

作者：

Tronchin, Lamberto ^{[1
]}

Coli, Vanna Lisa ^{[2
]}

机构：

[1] DIN-CIARM, University of Bologna, Bologna

[2] Department of Physics, Computer Science and Mathematics, University of Modena and Reggio Emilia

来源：

AES: Journal of the Audio Engineering Society | 2015年 / 63卷 / 09期

关键词：

Audio systems;

D O I：

10.17743/jaes.2015.0065

中图分类号：

TN911 [通信理论];

学科分类号：

081002 ;

摘要：

The emulation of nonlinearities of audio devices can be achieved by means of a nonlinear convolution method, which is based on a particular case of the Volterra series called the Diagonal Volterra series. The Volterra kernels characterize the nonlinear audio device being tested, dependent upon the level of the signal that passes through the device. In this paper a method is presented that approximates Volterra kernels in a continuous" range of levels by means of an interpolation procedure of an achieved number of measurements. In order to obtain the best emulation for real signals several parameters were tested. An extension of the previous Diagonal Volterra model is also developed to an arbitrary order of nonlinearities in order to allow better emulation of harmonics of low and medium frequencies. A particular case for the experiments is presented. © 2015 Journal of the Audio Engineering Society. © 2015 Journal of the Audio Engineering Society."

引用

页码：671 / 683

页数：12

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