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摘 要



信號的采集與分析技術(shù)是一門涉及面很廣的交叉科學(xué)，它的應(yīng)用和發(fā)展與電子測量技術(shù)以及數(shù)字信號處理等學(xué)科緊密聯(lián)系。其中信號采集和分析儀器的小型化、智能化、數(shù)字化以及多功能化的發(fā)展越來越快，分析速度較以往也有了大幅度的高。本文簡要介紹了連續(xù)信號的特征、采集與分析方法，并通過PC機(jī)錄制自己的一段聲音，運(yùn)用Matlab進(jìn)行仿真分析，最后進(jìn)行濾波處理，比較濾波前后的變化。



關(guān)鍵詞：信號；分析與處理；Matlab

目錄

摘 要 I

1緒論

1.1本課程的設(shè)計目的要求···················1

1.2設(shè)計原理·························2

2信號采集··························3

2.1信號的采集···················4

2.1采樣過程應(yīng)注意的問題··············4

3信號的頻譜分析·······················5

3.1信號的頻域分析···················5

4 設(shè)計濾波器·························7

4.1各濾波器的性能指標(biāo)：··············7

5 信號處理··························9

5.1FIR低通濾波器9

5.2FIR帶通濾波器···········································································································11

5.3FIR高通濾波器···········································································································13

總 結(jié)······································································································································16

致 謝······································································································································17

參考文獻(xiàn)································································································································18

參考文獻(xiàn)

[1]胡航．語音信號處理【M】．哈爾濱：哈爾濱工業(yè)大學(xué)出版社，2002．

[2]高西全、丁玉美編著．?dāng)?shù)字信號處理【M】．西安電子科技大學(xué)出版社，2008．

[3]鄭君里等編．信號與系統(tǒng)【M】．北京：高等教育出版社，2000．

[4]羅軍輝等編著【M】．MATLAB7.0在數(shù)字信號處理中的應(yīng)用．北京：機(jī)械工業(yè)出版社，2005．

[5]劉衛(wèi)國主編【M】．MATLAB程序設(shè)計與應(yīng)用（第二版）．北京：高等教育出版社，2006