cos025pi
y1co
vh1x1计算序列f1与f2的卷积和fk0k11
1计算序列f非零样值的起点位置k3le
gthx1le
gthh12计算卷积和f的非零样值的宽度kk0k0k3确定卷积和f非零样值的序号向量subplot221stemky1titlex1
与h1
的卷积和y1
xlabelkylabely1kx2cos125pi
y2co
vh1x2subplot222stemky2titlex2
与h1
的卷积和y2
xlabelkylabely2kx3x1x2y3co
vh1x3subplot223stemky3titlex3
与h1
的卷积和y3
xlabelkylabely3k
b
3
fclearh200238005620057501302052520684203129561975619703129068420525201302005750056200238k1015
44x1cos025pi
y1co
vh2x1计算序列f1与f2的卷积和fk0k11
1计算序列f非零样值的起点位置k3le
gthx1le
gthh22计算卷积和f的非零样值的宽度kk0k0k3确定卷积和f非零样值的序号向量subplot221stemky1titlex1
与h2
的卷积和y1
xlabelkylabely1kx2cos125pi
y2co
vh2x2subplot222stemky2titlex2
与h2
的卷积和y2
xlabelkylabely2kx3x1x2y3co
vh2x3subplot223stemky3titlex3
与h2
的卷积和y3
xlabelkylabely3k
4
f3afs128t1fsL256
01L1x1cos025pi
x2cos125pi
x3x2x1N2
extpow2LX1fftx1NN2X2fftx2NN2X3fftx3NN2ffsN01N1figuresubplot211plotfabsX1title幅值频谱xlabel频率HZylabel幅值subplot212plotfa
gleX1title相位频谱xlabel频率HZylabel相位figuresubplot211plotfabsX2title幅值频谱xlabel频率HZylabel幅值subplot212plotfa
gleX2title相位频谱xlabel频率HZylabel相位figuresubplot211plotfabsX3title幅值频谱xlabel频率HZylabel幅值subplot212plotfa
gleX3title相位频谱
5
fxlabel频率HZylabel相位
6
fbfs128t1fsL1256
01L11h100031000440003100272003460037401921032790327901921003740034600272000310004400031x1cos025pi
x2cos125pi
x3x2x1N2
extpow2L1X1fftx1NN2X2fftx2NN2X3fftx3NN2H1ffth1NN2Y11fftx1NN2ffth1NN2Y12fftx2NN2ffth1NN2Y13fftx3NN2ffth1NN2ffsN01N1figuresubplot211plotfabsH1title幅值频谱xlabel频率HZylabel幅值subplot212plotfa
gleH1title相位频谱xlabel频率HZylabel相位figuresubplot211plotfabsY11title幅值频谱xlabel频率HZylabel幅值subplot212plotfa
gleY11title相位频r