论文部分内容阅读
数字滤波是数字信号处理的重要内容之一,它和谱分析、相关处理一起构成了数字信号分析与处理的最常用的运算。与模拟滤波器相比,数字滤波具有精度高、性能稳定可靠,可以获得接近理想滤波的优良频率响应和便于改变滤波器的参数等优点。 数字滤波实际是一种计算过程或算法,它是把输入的一种数列变换成另工种数列作为数字输出信号。这种算法可在通用机上用软件程序来实现,也可用专用计算机硬件实现。微机及大规模集成电路的发展,使数字滤波的应用也越来越广泛。
Digital filtering is one of the most important parts of digital signal processing. Together with spectrum analysis and related processing, digital filtering constitutes the most common operation of digital signal analysis and processing. Compared with the analog filter, the digital filter has the advantages of high precision, stable and reliable performance, good frequency response close to the ideal filter and easy to change the parameters of the filter. Digital filtering is actually a calculation process or algorithm, it is a series of input into a different kind of number as a digital output signal. This algorithm can be used in general-purpose software programs to achieve, but also can be used to achieve special computer hardware. The development of microcomputers and large scale integrated circuits has made the application of digital filtering more and more widespread.