摘 要

随着科学技术的飞速发展，数字信号处理技术广泛的应用在各种领域中，而数字滤波技术在数字信号处理中占有极其重要的地位。传统的模拟滤波器已经很难满足工业生产的需求，所以，对数字滤波器的研究具有很重要的实际意义。相对于模拟滤波器，数字滤波器没有漂移，能够处理低频信号，可以得到非常理想的频率响应特性，而且可以达到非常高的精度，容易集成等，这些优势决定了数字滤波器的应用将会越来越广泛。本文首先介绍了有限冲击响应数字滤波器(即 FIR 数字滤波器)的概念和数学模型。分析了有限冲击响应数字滤波的各种网络拓扑结构及其特点。全面论述了有限冲击响应数字滤波器的基本理论。探讨了有限冲击响应数字滤波器的设计方法。

数字滤波器是数字信号处理的一个重要分支，它的精确度高、使用灵活、可靠性高，具有模拟设备所没有的许多优点，采用数字滤波器对信号进行处理是目前的发展方向。数字滤波器可分为IIR和FIR两大类，本文根据模拟滤波器的设计原理，提出了基于MATLAB的数字滤波器的设计与仿真，并在MATLB环境下实现 了FIR数字滤波器的仿真，通过分析可知所设计的滤波器符合我所提出的技术指标。

关键词：MATLAB，数字信号处理，数字滤波，建模与仿真

Abstract

With the rapid development of science and technology, digital signal processing technology is widely used in various fields, and digital filtering technology plays an extremely important role in digital signal processing. The traditional analog filter has been difficult to meet the needs of industrial production, so the research of digital filter has very important practical significance. Compared with analog filter, digital filter has no drift, can process low frequency signals, can get very ideal frequency response characteristics, and can achieve very high accuracy, easy integration, etc., these advantages determine the application of digital filter will be more and more extensive. This paper firstly introduces the concept and mathematical model of finite impulse response digital filter (FIR digital filter). Various network topologies and characteristics of finite impulse response digital filtering are analyzed. The basic theory of finite impulse response digital filter is discussed comprehensively. The design method of finite impulse response digital filter is discussed.

Digital filter is an important branch of digital signal processing, its high accuracy, flexible use, high reliability, has many advantages that analog equipment does not have, the use of digital filter for signal processing is the current development direction. Digital filters can be divided into two categories: IIR and FIR. According to the design principle of analog filters, this paper puts forward the design and simulation of digital filters based on MATLAB, and realizes the simulation of FIR digital filters in the MATLB environment. Through analysis, we can see that the designed filters conform to the technical indicators I put forward.

Key words: Permanent MATLAB, digital signal processing, digital filtering,modeling and simulation

完整论文点击如下链接下载：

https://download.csdn.net/download/weixin_45905610/88581934

基于简易FIR数字滤波器的设计资源-CSDN文库

matlab建模仿真点击如下链接下载：

https://download.csdn.net/download/weixin_45905610/88581936

简易FIR数字滤波器-matlab仿真资源-CSDN文库