基于matlab的信号分析与处理.rar

20页 7000字

摘 要



信号的采集与分析技术是一门涉及面很广的交叉科学，它的应用和发展与电子测量技术以及数字信号处理等学科紧密联系。其中信号采集和分析仪器的小型化、智能化、数字化以及多功能化的发展越来越快，分析速度较以往也有了大幅度的高。本文简要介绍了连续信号的特征、采集与分析方法，并通过PC机录制自己的一段声音，运用Matlab进行仿真分析，最后进行滤波处理，比较滤波前后的变化。



关键词：信号；分析与处理；Matlab

目录

摘 要 I

1绪论

1.1本课程的设计目的要求···················1

1.2设计原理·························2

2信号采集··························3

2.1信号的采集···················4

2.1采样过程应注意的问题··············4

3信号的频谱分析·······················5

3.1信号的频域分析···················5

4 设计滤波器·························7

4.1各滤波器的性能指标：··············7

5 信号处理··························9

5.1FIR低通滤波器9

5.2FIR带通滤波器···········································································································11

5.3FIR高通滤波器···········································································································13

总 结······································································································································16

致 谢······································································································································17

参考文献································································································································18

参考文献

[1]胡航．语音信号处理【M】．哈尔滨：哈尔滨工业大学出版社，2002．

[2]高西全、丁玉美编著．数字信号处理【M】．西安电子科技大学出版社，2008．

[3]郑君里等编．信号与系统【M】．北京：高等教育出版社，2000．

[4]罗军辉等编著【M】．MATLAB7.0在数字信号处理中的应用．北京：机械工业出版社，2005．

[5]刘卫国主编【M】．MATLAB程序设计与应用（第二版）．北京：高等教育出版社，2006