关于声学回声消除器中功放/扬声器非线性数学建模的注解

2011 Saudi International Electronics, Communications and Photonics Conference (SIECPC) Pub Date : 2011-04-24 DOI:10.1109/SIECPC.2011.5876893

M. Abuelma'atti

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引用次数: 0

摘要

本文提出了一种新的简单的三参数非线性数学模型来描述声回波消除器中功放/扬声器非线性的非线性特性。模型的三个参数直接关系到非线性特性的三个不同部分。该模型及其一阶导数是连续的，并在整个输入幅度范围内延伸。将该模型与传统的线性自适应滤波器相结合，设计出计算效率高的声回波消除器是可行的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A note on the mathematical modeling of power amplifier/loudspeaker nonlinearity in acoustic echo cancellers

In this paper a new simple, three-parameter nonlinear mathematical model is proposed to represent the nonlinear characteristics of the power amplifier/loudspeaker nonlinearity in acoustic echo cancellers. The three parameters of the model are directly related to three distinct different sections of the nonlinear characteristic. The model and its first derivatives are continuous and stretch over the full range of input amplitudes. Using this model in conjunction with a conventional linear adaptive filter, the design of computationally efficient acoustic echo cancellers would be feasible.

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2011 Saudi International Electronics, Communications and Photonics Conference (SIECPC)

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