求翻译：滤波器是指用来对输入信号进行滤波的硬件或软件。如果滤波器的输入，输出都是离散信号，则该滤波器中的冲击响应也是必然离散的，这样的滤波器定义为数字滤波器。根据数字滤波器冲激响应函数的时域特性，可将数字滤波器分为两种,即无限长冲激响应IIR滤波器和有限长冲激响应FIR滤波器。FIR数字滤波器的有点是可以利用模拟滤波器设计的结果，而模拟滤波器有大量图表可查，方便简单。缺点是相位的非线性，FIR滤波器可以得到严格的线性是什么意思？

Filter is used to filter the input signal hardware or software. If the filter input and output signals are discrete, then the filter in the discrete impulse response is inevitable, such a filter is defined as the digital filter. Digital filter impulse response function based on time-domain character

filters which are to be used for filtering the input signals of hardware or software. If the input and output filters are separated signal, the filter in response to the impact is also inevitable, so that the filter definition of reunion for the digital filters. In accordance with the digital filter

The filter are refer use for to carry on the filter to the input signal the hardware or the software.If the filter input, the output all is the discrete signal, then in this filter impact response also is inevitably separate, such filter define as the digital filter.According to the digital filter i

Filter is used to filter the input signal's hardware or software. If the filter input, the output is a discrete-time signal, then the filter's impulse response is necessarily discrete, such filters are defined as digital filters. According to time domain characteristics of digital filter with impuls

The electric-wave filter refers to used for straining the hardware or software of the wave to the input signalling. If the input of the electric-wave filter, it is all dispersed signals to output, the impact in this electric-wave filter is responded to must be dispersed too, such an electric-wave fi