The Study Of Adaptive Filter Based On DSP Systems

With the development of the technology in the adaptive filter and the very large scale integration(VLSI),it offers the theory and technical support for studying to cancel noises in system.The adaptive noise canceling system can pick up and detect the useful signal.This dissertation designing an adaptive noise canceling system,it can eliminate noise of background and improve quality of phonic signal.The main task firstly introduces the basic theory research of the adaptive noise canceling system .The most important point in this part is simulinking by MATLAB and analyzing the result of simulinking which prove the feasibility of the design and algorithm.Emulational examination shows that the adaptive noise canceling system have well effect in phonic signal noise canceling.Secondly introduces the holistic design of the adaptive noise canceling system.On the foundation of the first part,puting up a design of canceling noise by taking advantage of DSP chip (TMS320LF2407),on which it realizes the LMS algorithm.The author write out the flow diagram for programming.At the end of the article,the article intruduces DSP chip and the debugging that make use of emulational board,also intruduces A/D and D/A of the adaptive noise canceling system.