低通滤波源码，C与汇编嵌套，效率奇高。 为1K，FFT.基于54系列-source low-pass filtering, with the compilation of nested C, a high efficiency. 1K, FFT. Based on Series 54

基于tms320c54xdsp原理，应用ccs实现的低通滤波，自适应滤波及fir滤波。-Based tms320c54xdsp principle, application ccs realize low-pass filtering, adaptive filtering and fir filter.