Implementation of Adaptive Filter Based on DSP

In the process of Digital Signal Processing,some random signal,noise or the time-varying signal must be dealt with.The adoption of digital filters with fixed coefficient can not realize the optimized filter.Therefore it is necessary to design an Adaptive Filter to track the changes of the signal and noise.This paper mainly introduces the structure and principle of Adaptive Filter and the research of Least Mean Squareal (LMS) algorithm,and presents the implementation of simulation in the software simulator of a sixteenth orders Adaptive Filter which is designed in C language in DSP's integrated development environment.Through adjusting the adaptive step of the Filter constantly,and analyzing the experimental results comparatively,a conclusion is given in the end.