信息技术综合实 徐一铭 201127100 信息112班 题目是IIR数字滤波器的设计.doc

信息技术 综合实习报告 IIR数字滤波器的设计 班级：信息112班 学号：201127100 姓名：徐一铭 指导老师：王辛杰 赵锟 日期：2014年12月28日 摘 要 当今社会已经是数字化的信息时代，而随之对信号处理的技术及要求亦趋于高速、集成化。无论是学习、工作还是生活无一例外的都与信息紧密相关着，信号是信息的载体，我们对信息的处理正是通过对信号的处理来实现的。随着数字电路与系统技术以及计算机技术的发展，数字信号处理技术也相应地得到发展，其应用领域十分广泛。ABSTRACT In todays society is the digital information age, and then the signal processing technology, and demand also tend to be high speed, integration .Whether study, work and life are no exception, are closely related to information and signal is the carrier of information, we are handling of information is based on signal processing.With the development of digital circuit and system technology and the computer technology, digital signal processing technology has been developing, its application is very extensive.Leap development in the new era, the DSP technology, core technology and electronic products, grasp the basic theory of DSP technology and operation and basic design technology for electronic information engineering college students is of less than not.Filter the role of the main is to choose the frequency band of the signal required content and suppress dont need other band signal.Digital filter because of its advantages of high precision, good reliability, flexibility, in speech signal processing, signal spectrum estimation, signal denoising, wireless communication frequency and the number in the image processing and other projects in the practical application is very wide.Often mixed with a variety of complex components in the signal, so a lot of signal analysis is carried out based on the filter. This training is divided into two stages: one is making the analog bandpass filter using op-amp, center frequency for your student id behind two digits, and the back of the quality factor for student id double-digit divided by 10;2 it is to use MATLAB software through the GUI to realize IIR (FIR) digital low-pass, high-pass, band-pass, or band-stop) filter. KEY WORDS: Bandpass filter,Digital filter,MATLAB,GU