Adaptive filter and noise cancellation

Abstract

This article will mainly based on the principle of adaptive filter and its application technology and make a concrete analysis and research, mainly discusses the FIR filter and adaptive noise canceller two types of filter, and starting from the basic principle of two filters, adopt different LMS algorithm MATLAB simulation experiment of the system.Nowadays, Because of the global stability of the FIR system and can guarantee the system of linear phase characteristic, through the software to design FIR filter, the structure of the software can automatically generate filter.Through the adaptive filter can estimate the noise in the original input, thus in the system output signal.In the application of adaptive filter is very broad, can the purpose of this paper is from the FIR filter and adaptive noise cancellation in found in adaptive filter, the different response of the filter selection according to the required performance need.