DA算法中的使用的查找表模块，本程序先设计查找表，然后设计4*4DA算法模块，之后进行位扩展和字扩展得到32阶滤波器程序.附带4各表，和FIR滤波器序数-DA algorithm used in the lookup table module, the design of the program first look-up table, and then design 4* 4DA algorithm module, after the word-bit expansion and extens

本系统以51单片机和FPGA为核心，完成程控放大电路和程控滤波电路，同时设计完成了简易幅频特性测试仪。里面有详细的电路图和设计报告。-The system of 51 single-chip and FPGA as the core to complete the program and program-controlled amplifier filter circuit at the same time to complete the design of amplitude-frequenc

积分器的一种实现方法：每级积分器都是一个反馈系数为1的单极点IIR滤波器, 其传递函数为:(An implementation of an integrator: each stage integrator is a single pole IIR filter with a feedback factor of 1:)