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</span></span><!--[endif]--><span style="font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"">下列四个离散信号，只有</span><span lang="EN-US">____</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">是周期序列，其周期</span><span lang="EN-US">N=_____</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">。</span></p>

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<p class="MsoNormal" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1;
tab-stops:list 18.0pt"><!--[if !supportLists]--><span lang="EN-US">2、<span style="font-variant-numeric: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: "Times New Roman";">
</span></span><!--[endif]--><span style="font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"">下面是四个系统的单位脉冲响应，</span><span lang="EN-US">______</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">所描绘的是因果、稳定系统。</span></p>

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mso-text-raise:-6.0pt"><!--[if gte vml 1]><v:shape id="_x0000_i1026" type="#_x0000_t75"
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<p class="MsoNormal"><span lang="EN-US">3</span><span style="font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">、线性相位滤波器共有</span><span lang="EN-US">______</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">种形式？</span><span lang="EN-US">_____</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">型适用于设计带通滤波器。</span></p>

<p class="MsoNormal"><span lang="EN-US">4</span><span style="font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">、已知序列</span><span lang="EN-US">x</span><sub><span lang="EN-US">1</span></sub><span lang="EN-US">(n)</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">是</span><span lang="EN-US">M</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">点的序列，</span><span lang="EN-US">x</span><sub><span lang="EN-US">2</span></sub><span lang="EN-US">(n)</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">是</span><span lang="EN-US">N</span><span style="font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">点的序列（设</span><span lang="EN-US">M>N</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US">,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
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mso-hansi-font-family:"Times New Roman"">点的序列</span> <span style="font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">；</span><span lang="EN-US"><span style="position:relative;top:6.0pt;mso-text-raise:-6.0pt"><!--[if gte vml 1]><v:shape
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"Times New Roman";mso-hansi-font-family:"Times New Roman"">是</span><span lang="EN-US">_____</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">点的序列；</span><span lang="EN-US"><span style="position:relative;top:6.0pt;mso-text-raise:-6.0pt"><!--[if gte vml 1]><v:shape
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"Times New Roman";mso-hansi-font-family:"Times New Roman"">是</span><span lang="EN-US">____</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">的序列。</span></p>

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<p class="MsoNormal"><span lang="EN-US">5</span><span style="font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">、对下面信号不失真均匀采样的奈奎斯特频率各为多少？</span></p>

<p class="MsoNormal"><span lang="EN-US"><span style="position:relative;top:5.0pt;
mso-text-raise:-5.0pt"><!--[if gte vml 1]><v:shape id="_x0000_i1036" type="#_x0000_t75"
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</v:shape><![endif]--><!--[if !vml]--><img width="497" height="24" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image014.gif" v:shapes="_x0000_i1036"><!--[endif]--></span><!--[if gte mso 9]><xml>
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<p class="MsoNormal"><span lang="EN-US">6</span><span style="font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">、下列四个方程中，只有＿所描述的是线性时不变系统。</span></p>

<p class="MsoNormal"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">（</span><span lang="EN-US">1</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
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</v:shape><![endif]--><!--[if !vml]--><img width="84" height="24" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image016.gif" v:shapes="_x0000_i1030"><!--[endif]--></span><!--[if gte mso 9]><xml>
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</xml><![endif]--> </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">（</span><span lang="EN-US">2</span><span style="font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US"><span style="position:relative;top:5.0pt;mso-text-raise:-5.0pt"><!--[if gte vml 1]><v:shape
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"Times New Roman"">（</span><span lang="EN-US">3</span><span style="font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US"><span style="position:relative;top:6.0pt;mso-text-raise:-6.0pt"><!--[if gte vml 1]><v:shape
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</v:shape><![endif]--><!--[if !vml]--><img width="105" height="24" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image020.gif" v:shapes="_x0000_i1032"><!--[endif]--></span><!--[if gte mso 9]><xml>
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</xml><![endif]--> </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">（</span><span lang="EN-US">4</span><span style="font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US"><span style="position:relative;top:5.0pt;mso-text-raise:-5.0pt"><!--[if gte vml 1]><v:shape
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</v:shape><![endif]--><!--[if !vml]--><img width="84" height="24" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image022.gif" v:shapes="_x0000_i1033"><!--[endif]--></span><!--[if gte mso 9]><xml>
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<p class="MsoNormal" align="left"><span lang="EN-US">7</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
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</v:shape><![endif]--><!--[if !vml]--><img width="225" height="48" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image024.gif" v:shapes="_x0000_i1034"><!--[endif]--></span><!--[if gte mso 9]><xml>
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<p class="MsoNormal" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1;
tab-stops:list 18.0pt"><!--[if !supportLists]--><span lang="EN-US">1、<span style="font-variant-numeric: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: "Times New Roman";">
</span></span><!--[endif]--><span style="font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"">下列四个离散信号，只有</span><span lang="EN-US">____</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">是周期序列，其周期</span><span lang="EN-US">N=_____</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">。</span></p>

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<p class="MsoNormal" style="margin-left:18.0pt;text-indent:-18.0pt;mso-list:l0 level1 lfo1;
tab-stops:list 18.0pt"><!--[if !supportLists]--><span lang="EN-US">2、<span style="font-variant-numeric: normal; font-stretch: normal; font-size: 7pt; line-height: normal; font-family: "Times New Roman";">
</span></span><!--[endif]--><span style="font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"">下面是四个系统的单位脉冲响应，</span><span lang="EN-US">______</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">所描绘的是因果、稳定系统。</span></p>

<p class="MsoNormal"><span lang="EN-US"><span style="position:relative;top:6.0pt;
mso-text-raise:-6.0pt"><!--[if gte vml 1]><v:shape id="_x0000_i1026" type="#_x0000_t75"
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<v:imagedata src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image003.wmz"
o:title=""/>
</v:shape><![endif]--><!--[if !vml]--><img width="519" height="25" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image004.gif" v:shapes="_x0000_i1026"><!--[endif]--></span><!--[if gte mso 9]><xml>
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<p class="MsoNormal"><span lang="EN-US">3</span><span style="font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">、线性相位滤波器共有</span><span lang="EN-US">______</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">种形式？</span><span lang="EN-US">_____</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">型适用于设计带通滤波器。</span></p>

<p class="MsoNormal"><span lang="EN-US">4</span><span style="font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">、已知序列</span><span lang="EN-US">x</span><sub><span lang="EN-US">1</span></sub><span lang="EN-US">(n)</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">是</span><span lang="EN-US">M</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">点的序列，</span><span lang="EN-US">x</span><sub><span lang="EN-US">2</span></sub><span lang="EN-US">(n)</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">是</span><span lang="EN-US">N</span><span style="font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">点的序列（设</span><span lang="EN-US">M>N</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US">,</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">则</span><span lang="EN-US"><span style="position:relative;
top:6.0pt;mso-text-raise:-6.0pt"><!--[if gte vml 1]><v:shape id="_x0000_i1027"
type="#_x0000_t75" style=´width:62.25pt;height:18pt´ o:ole="">
<v:imagedata src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image005.wmz"
o:title=""/>
</v:shape><![endif]--><!--[if !vml]--><img width="83" height="24" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image006.gif" v:shapes="_x0000_i1027"><!--[endif]--></span><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1027"
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</o:OLEObject>
</xml><![endif]--></span><span style="font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"">是</span><span lang="EN-US">____</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">点的序列</span> <span style="font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">；</span><span lang="EN-US"><span style="position:relative;top:6.0pt;mso-text-raise:-6.0pt"><!--[if gte vml 1]><v:shape
id="_x0000_i1028" type="#_x0000_t75" style=´width:63pt;height:18pt´ o:ole="">
<v:imagedata src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image007.wmz"
o:title=""/>
</v:shape><![endif]--><!--[if !vml]--><img width="84" height="24" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image008.gif" v:shapes="_x0000_i1028"><!--[endif]--></span><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1028"
DrawAspect="Content" ObjectID="_1550146714">
</o:OLEObject>
</xml><![endif]--></span><span style="font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"">是</span><span lang="EN-US">_____</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">点的序列；</span><span lang="EN-US"><span style="position:relative;top:6.0pt;mso-text-raise:-6.0pt"><!--[if gte vml 1]><v:shape
id="_x0000_i1029" type="#_x0000_t75" style=´width:62.25pt;height:18pt´ o:ole="">
<v:imagedata src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image009.wmz"
o:title=""/>
</v:shape><![endif]--><!--[if !vml]--><img width="83" height="24" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image010.gif" v:shapes="_x0000_i1029"><!--[endif]--></span><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1029"
DrawAspect="Content" ObjectID="_1550146715">
</o:OLEObject>
</xml><![endif]--></span><span style="font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"">是</span><span lang="EN-US">____</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">的序列。</span></p>

<p class="MsoNormal"><span lang="EN-US"><span style="position:relative;top:5.0pt;
mso-text-raise:-5.0pt"><!--[if gte vml 1]><v:shape id="_x0000_i1037" type="#_x0000_t75"
style=´width:264.75pt;height:17.25pt´ o:ole="">
<v:imagedata src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image011.wmz"
o:title=""/>
</v:shape><![endif]--><!--[if !vml]--><img width="353" height="23" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image012.gif" v:shapes="_x0000_i1037"><!--[endif]--></span><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1037"
DrawAspect="Content" ObjectID="_1550146716">
</o:OLEObject>
</xml><![endif]--></span></p>

<p class="MsoNormal"><span lang="EN-US">5</span><span style="font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">、对下面信号不失真均匀采样的奈奎斯特频率各为多少？</span></p>

<p class="MsoNormal"><span lang="EN-US"><span style="position:relative;top:5.0pt;
mso-text-raise:-5.0pt"><!--[if gte vml 1]><v:shape id="_x0000_i1036" type="#_x0000_t75"
style=´width:372.75pt;height:18pt´ o:ole="">
<v:imagedata src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image013.wmz"
o:title=""/>
</v:shape><![endif]--><!--[if !vml]--><img width="497" height="24" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image014.gif" v:shapes="_x0000_i1036"><!--[endif]--></span><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1036"
DrawAspect="Content" ObjectID="_1550146717">
</o:OLEObject>
</xml><![endif]--></span></p>

<p class="MsoNormal"><span lang="EN-US">6</span><span style="font-family:宋体;
mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">、下列四个方程中，只有＿所描述的是线性时不变系统。</span></p>

<p class="MsoNormal"><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";
mso-hansi-font-family:"Times New Roman"">（</span><span lang="EN-US">1</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">）</span><span lang="EN-US"><span style="position:relative;
top:5.0pt;mso-text-raise:-5.0pt"><!--[if gte vml 1]><v:shape id="_x0000_i1030"
type="#_x0000_t75" style=´width:63pt;height:18pt´ o:ole="">
<v:imagedata src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image015.wmz"
o:title=""/>
</v:shape><![endif]--><!--[if !vml]--><img width="84" height="24" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image016.gif" v:shapes="_x0000_i1030"><!--[endif]--></span><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1030"
DrawAspect="Content" ObjectID="_1550146718">
</o:OLEObject>
</xml><![endif]--> </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">（</span><span lang="EN-US">2</span><span style="font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US"><span style="position:relative;top:5.0pt;mso-text-raise:-5.0pt"><!--[if gte vml 1]><v:shape
id="_x0000_i1031" type="#_x0000_t75" style=´width:80.25pt;height:15.75pt´
o:ole="">
<v:imagedata src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image017.wmz"
o:title=""/>
</v:shape><![endif]--><!--[if !vml]--><img width="107" height="21" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image018.gif" v:shapes="_x0000_i1031"><!--[endif]--></span><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1031"
DrawAspect="Content" ObjectID="_1550146719">
</o:OLEObject>
</xml><![endif]--> </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">（</span><span lang="EN-US">3</span><span style="font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US"><span style="position:relative;top:6.0pt;mso-text-raise:-6.0pt"><!--[if gte vml 1]><v:shape
id="_x0000_i1032" type="#_x0000_t75" style=´width:78.75pt;height:18pt´ o:ole="">
<v:imagedata src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image019.wmz"
o:title=""/>
</v:shape><![endif]--><!--[if !vml]--><img width="105" height="24" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image020.gif" v:shapes="_x0000_i1032"><!--[endif]--></span><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1032"
DrawAspect="Content" ObjectID="_1550146721">
</o:OLEObject>
</xml><![endif]--> </span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">（</span><span lang="EN-US">4</span><span style="font-family:
宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:"Times New Roman"">）</span><span lang="EN-US"><span style="position:relative;top:5.0pt;mso-text-raise:-5.0pt"><!--[if gte vml 1]><v:shape
id="_x0000_i1033" type="#_x0000_t75" style=´width:63pt;height:18pt´ o:ole="">
<v:imagedata src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image021.wmz"
o:title=""/>
</v:shape><![endif]--><!--[if !vml]--><img width="84" height="24" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image022.gif" v:shapes="_x0000_i1033"><!--[endif]--></span><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1033"
DrawAspect="Content" ObjectID="_1550146722">
</o:OLEObject>
</xml><![endif]--></span></p>

<p class="MsoNormal" align="left"><span lang="EN-US">7</span><span style="font-family:宋体;mso-ascii-font-family:"Times New Roman";mso-hansi-font-family:
"Times New Roman"">、若</span><span lang="EN-US"><span style="position:relative;
top:15.0pt;mso-text-raise:-15.0pt"><!--[if gte vml 1]><v:shape id="_x0000_i1034"
type="#_x0000_t75" style=´width:168.75pt;height:36pt´ o:ole="">
<v:imagedata src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image023.wmz"
o:title=""/>
</v:shape><![endif]--><!--[if !vml]--><img width="225" height="48" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image024.gif" v:shapes="_x0000_i1034"><!--[endif]--></span><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1034"
DrawAspect="Content" ObjectID="_1550146723">
</o:OLEObject>
</xml><![endif]--></span><span style="font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"">，试说明</span><span lang="EN-US"><span style="position:relative;top:6.0pt;mso-text-raise:-6.0pt"><!--[if gte vml 1]><v:shape
id="_x0000_i1035" type="#_x0000_t75" style=´width:207pt;height:18.75pt´ o:ole="">
<v:imagedata src="file:///C:\Users\ADMINI~1\AppData\Local\Temp\msohtmlclip1\01\clip_image025.wmz"
o:title=""/>
</v:shape><![endif]--><!--[if !vml]--><img width="276" height="25" src="file:///C:/Users/ADMINI~1/AppData/Local/Temp/msohtmlclip1/01/clip_image026.gif" v:shapes="_x0000_i1035"><!--[endif]--></span><!--[if gte mso 9]><xml>
<o:OLEObject Type="Embed" ProgID="Equation.DSMT4" ShapeID="_x0000_i1035"
DrawAspect="Content" ObjectID="_1550146724">
</o:OLEObject>
</xml><![endif]--></span><span style="font-family:宋体;mso-ascii-font-family:
"Times New Roman";mso-hansi-font-family:"Times New Roman"">。</span></p>"/>
我要上传豆丁书房

数字信号处理复习题

1 楼
一、基本题：

1、 下列四个离散信号，只有____是周期序列，其周期N=_____。

2、 下面是四个系统的单位脉冲响应，______所描绘的是因果、稳定系统。

3、线性相位滤波器共有______种形式？_____型适用于设计带通滤波器。

4、已知序列x1(n)是M点的序列，x2(n)是N点的序列（设M>N）,则是____点的序列 ；是_____点的序列；是____的序列。

5、对下面信号不失真均匀采样的奈奎斯特频率各为多少？

6、下列四个方程中，只有＿所描述的是线性时不变系统。

（1） （2） （3） （4）

7、若，试说明。

2017-03-04 15:32:12

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