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ID：35568018
大小：133.50 KB
页数：7页
时间：2019-03-29
《窗函数设计fir数字滤波器程序》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、.矩形窗函数...hamming...三角窗函数...汉宁...凯泽...布莱克曼...helpfreqsFREQSLaplace-transform(s-domain)frequencyresponse.H=FREQS(B,A,W)returnsthecomplexfrequencyresponsevectorHofthefilterB/A:nb-1nb-2B(s)b(1)s+b(2)s+...+b(nb)H(s)=----=-------------------------------------na-1na-2A(s)a(1)s+a(2)s+...+a(na)giventhenume
2、ratoranddenominatorcoefficientsinvectorsBandA.ThefrequencyresponseisevaluatedatthepointsspecifiedinvectorW(inrad/s).ThemagnitudeandphasecanbegraphedbycallingFREQS(B,A,W)withnooutputarguments.[H,W]=FREQS(B,A)automaticallypicksasetof200frequenciesWonwhichthefrequencyresponseiscomputed.FREQS(B,A,N)pi
3、cksNfrequencies.Seealsologspace,polyval,invfreqs,andfreqz.ReferencepageinHelpbrowser..
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