摘要
文章概述了噪声抵消技术的研究现状,以语音信号为例着重阐述了不同种类的噪声抵消方法,并对其性能进行比较,经比较得出自适应噪声抵消方法具有自适应能力强、输出噪声低和信号畸变小的特点,其自适应能力表现在允许对特性未知的输入信号进行处理,由于其性能的卓越性,在噪声抵消系统中具有广泛的应用价值。
This paper outlines the research status quo of the noise cancellation technology, voice signal, for example, focuses on different types of noise cancellation, and its performance comparisons of the adaptive noise offset method has adaptive ability, the output noise low and signal distortion characteristics of a small, the performance of its adaptive ability to allow the unknown to the characteristics of the input signal processing, due to the excellence of its performance, the noise canceling system has wide application.
出处
《湖南农机(学术版)》
2012年第1期83-84,共2页
Hunnan Agricultural Machinery
关键词
噪声抵消
频谱减法
线性滤波法
noise cancellation
spectrum subtraction
linear filtering method