基于TMS320C5402的数字滤波器及其应用系统的设计与实现-微电子学与固体电子学专业论文.docxVIP

ABSTRACTDSP ABSTRACT DSP technology means the technology to accomplish digital signal processing． Nowadays DSPs are getting more and more attentions in the information field，due to its powerful signal processing ability,becoming a hot—point technique in communication and other relating signal processing areas．DSP chips produced by Tl(Texas Instrument)hold 50 percent in whole DSP market，many applications of digital signal processing are carried out around T1 DSP． DSP chip is especially fit for digital signal processing,its main application is realizing all kinds of digital siginal processing arithmetics such as clove hitch、 correlation、all kinds of transformS etc．Realizing digital filters with DSP is an important application． The paper discusses the filter’S software realization based on TM$320C5402， and finished the hardware system of noise-restraining．The atithmetic system was compiled with C and assemble language，distributing memory with RCP or CMD files，writing into chip and realizing expectable functions．The main works accomplished are as following： l realizing FIR filter With window function．The filter can satisfied different characteristics requirements by transferring four window functions，intercepting different filter archetypes． 2 realizing FFT／IFFT with time-drawing．we can make frequency domain analysis and disposal with it．the arithmetic has important application in communication engineering． 3 realizatin of three-segment equalizer．we can control spectrumthrough control to the signal amplitude． 4 Self-adaptive fiber,the most active one in digital filters．刀}c improved LMS arithmetic can adaptive the minimum puls response automaticly by the guide line of minimum average square error and have the best filtering effect．the method is easy to practise and has been introduced extensively．We can process real time disposal to the voice signal with noise and get pure voice signal． 5 noise restraining hardware system：the system’S core is TMS320C5402 chip，incl