dsp论文_二阶带通滤波器的_课程设计.doc

信号处理课程设计 题 目 二阶带通滤波器 学 院 通信与电子工程学院 专业班级 电子097班 学生姓名 指导教师 2012年 12 月 25 日 摘要 滤波是将中特定波段滤除的操作，是抑制和防止干扰的一项重要措施对特定频率的频点或该频点以外的频率进行有效滤除的电路。 Abstract Filtering is to signal a particular band frequency filtering operation, is to prevent interference suppression and one of the most important measures. The signal processing is widely used in. The so-called filter, is on a particular frequency frequency point or the frequency point outside of the frequency effectively filter circuit. Analog filter theory and design method is quite mature, design can choose typical analog filter, such as butterworth filter, chebyshev filters, elliptic filter, beisaier filter and so on, they have strict design formula and ready-made curve and charts for reference, butterworth filter has the monotone decline amplitude frequency characteristics; Chebyshev filter the amplitude-frequency characteristics of the passband and stop-band fluctuations in, can improve the selective. MATLAB language and its toolbox, which would be a good package of usability and reliability, generality and professional, and general purpose applications and advanced professional application almost perfectly integrates in together. And with its powerful, advanced technology and application of the depth, make its become international calculation standard for all over the world more than 200000 scientists and engineers use. Using MATLAB software, can make the design of filter relatively simple easy to realize, therefore, this paper makes use of the MATLAB software to carry out the application research. This paper is based on the simulation of low pass filter prototype, through the butterworth, chebyshev I, chebyshev type II concrete algorithm to simulate the band stop filter design, and through and direct use of MATLAB software has been mature