⭐ 欢迎来到虫虫下载站！ | 📦 资源下载 📁 资源专辑 ℹ️ 关于我们
⭐ 虫虫下载站
📤 上传资源

📄 傅立叶fft原理是什么？ - 天涯问答.mht

📁 时域频域基本概念
💻 MHT
📖 第 1 页 / 共 5 页
字号:
🔍
12345 
                  </DIV></DIV>
                  <DIV class=3DwlslbCSS>
                  <DIV><A class=3D"wlsfl1CSS wpfitCSS wpfilCSS" =
title=3D=E6=B6=88=E8=B4=B9=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D5a2f2dc646690e42">=E6=B6=
=88=E8=B4=B9</A>=20
                  </DIV>
                  <DIV><A class=3D"wlsfl5CSS wpfitCSS wpfilCSS =
wpfithCSS" title=3D=E8=B4=AD=E7=89=A9=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D46241a40892cef92">=E8=B4=
=AD=E7=89=A9</A>=20
                  <A class=3D"wlsfl5CSS wpfitCSS wpfilCSS wpfithCSS" =
title=3D=E8=B4=AD=E8=BD=A6=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D73f3a4b5e4141d4c">=E8=B4=
=AD=E8=BD=A6</A>=20
                  <A class=3D"wlsfl5CSS wpfitCSS wpfilCSS wpfithCSS" =
title=3D=E8=B4=AD=E6=88=BF=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D6ebecde23733af9d">=E8=B4=
=AD=E6=88=BF</A>=20
                  <A class=3D"wlsfl5CSS wpfitCSS wpfilCSS wpfithCSS" =
title=3D=E6=89=93=E6=8A=98=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D3222bea5cf08c40f">=E6=89=
=93=E6=8A=98</A>=20
                  <A class=3D"wpfitCSS wpfilCSS wpfithCSS"=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D5a2f2dc646690e42">=C2=BB=
</A>=20
                  </DIV></DIV>
                  <DIV class=3DwlslbCSS>
                  <DIV><A class=3D"wlsfl1CSS wpfitCSS wpfilCSS" =
title=3D=E6=97=85=E6=B8=B8=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D77a681deeda2e390">=E6=97=
=85=E6=B8=B8</A>=20
                  </DIV>
                  <DIV><A class=3D"wlsfl5CSS wpfitCSS wpfilCSS =
wpfithCSS" title=3D=E4=BA=A4=E9=80=9A=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D4d1e14eadab40330">=E4=BA=
=A4=E9=80=9A</A>=20
                  <A class=3D"wlsfl5CSS wpfitCSS wpfilCSS wpfithCSS" =
title=3D=E9=85=92=E5=BA=97=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D36e827b9837f8c70">=E9=85=
=92=E5=BA=97</A>=20
                  <A class=3D"wlsfl5CSS wpfitCSS wpfilCSS wpfithCSS" =
title=3D=E7=81=AB=E8=BD=A6=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D1df17342a2182a16">=E7=81=
=AB=E8=BD=A6</A>=20
                  <A class=3D"wlsfl5CSS wpfitCSS wpfilCSS wpfithCSS" =
title=3D=E6=99=AF=E5=8C=BA=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D6f49fac7ee117546">=E6=99=
=AF=E5=8C=BA</A>=20
                  <A class=3D"wpfitCSS wpfilCSS wpfithCSS"=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D77a681deeda2e390">=C2=BB=
</A>=20
                  </DIV></DIV>
                  <DIV class=3DwlslbCSS>
                  <DIV><A class=3D"wlsfl1CSS wpfitCSS wpfilCSS" =
title=3D=E5=9C=B0=E5=8C=BA=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D16b7b015fc1b56d1">=E5=9C=
=B0=E5=8C=BA</A>=20
                  </DIV>
                  <DIV><A class=3D"wlsfl5CSS wpfitCSS wpfilCSS =
wpfithCSS"=20
                  title=3D=E6=B5=B7=E5=A4=96=E5=9C=B0=E5=8C=BA=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D5cdd7606a1de0d26">=E6=B5=
=B7=E5=A4=96=E5=9C=B0=E5=8C=BA</A>=20
                  <A class=3D"wlsfl5CSS wpfitCSS wpfilCSS wpfithCSS" =
title=3D=E5=8C=97=E4=BA=AC=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D4b9ef7bf95451444">=E5=8C=
=97=E4=BA=AC</A>=20
                  <A class=3D"wlsfl5CSS wpfitCSS wpfilCSS wpfithCSS" =
title=3D=E4=B8=8A=E6=B5=B7=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D1a7c32542a774987">=E4=B8=
=8A=E6=B5=B7</A>=20
                  <A class=3D"wlsfl5CSS wpfitCSS wpfilCSS wpfithCSS" =
title=3D=E5=A4=A9=E6=B4=A5=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D14ed2ef8cb65bfe0">=E5=A4=
=A9=E6=B4=A5</A>=20
                  <A class=3D"wpfitCSS wpfilCSS wpfithCSS"=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D16b7b015fc1b56d1">=C2=BB=
</A>=20
                  </DIV></DIV>
                  <DIV class=3Dc></DIV></DIV></DIV>
                  <DIV style=3D"FONT-SIZE: 1px; HEIGHT: 2px"></DIV>
                  <DIV class=3D"wpabarCSS&#10;wpatiaCSS"><A=20
                  =
href=3D"http://wenda.tianya.cn/wenda/labels?tab=3Dwtmtorl">=E6=89=80=E6=9C=
=89=E6=A0=87=E7=AD=BE=E5=88=97=E8=A1=A8=C2=BB</A>=20
                  </DIV>
                  <DIV></DIV>
                  <DIV style=3D"FONT-SIZE: 1px; HEIGHT: 4px"></DIV></TD>
                <TD class=3D"w4 v" id=3D_bd style=3D"BACKGROUND-COLOR: =
#c3eeb6">
                  <DIV class=3Dw4></DIV></TD></TR></TBODY></TABLE>
            <TABLE width=3D"100%">
              <TBODY>
              <TR>
                <TD>
                  <DIV class=3Dh>
                  <DIV class=3D"w5 h l" id=3D_bd=20
                  style=3D"BACKGROUND-COLOR: #c3eeb6"></DIV>
                  <DIV class=3D"w5 h r" id=3D_bd=20
                  style=3D"BACKGROUND-COLOR: #c3eeb6"></DIV>
                  <DIV class=3Dc></DIV></DIV>
                  <DIV class=3Dh id=3D_bd style=3D"BACKGROUND-COLOR: =
#c3eeb6">
                  <DIV class=3D"w1 h l" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                  <DIV class=3D"w1 h r" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                  <DIV class=3Dc></DIV></DIV>
                  <DIV class=3Dh id=3D_bd style=3D"BACKGROUND-COLOR: =
#c3eeb6">
                  <DIV class=3D"w1 h l" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                  <DIV class=3D"w1 h r" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                  <DIV class=3Dc></DIV></DIV>
                  <DIV class=3Dh id=3D_bd style=3D"BACKGROUND-COLOR: =
#c3eeb6">
                  <DIV class=3D"w2 h l" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                  <DIV class=3D"w2 h r" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                  <DIV class=3Dc></DIV></DIV>
                  <DIV class=3Dh id=3D_bd style=3D"BACKGROUND-COLOR: =
#c3eeb6">
                  <DIV class=3D"w4 h l" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                  <DIV class=3D"w4 h r" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                  <DIV=20
            =
class=3Dc></DIV></DIV></TD></TR></TBODY></TABLE></DIV></DIV></DIV></DIV>
            <SCRIPT>=0A=
CALL('cf.Program.loadPersonalArea');=0A=
</SCRIPT>
            </DIV></TD>
          <TD class=3DwmfmCSS id=3Dwmfm>
            <DIV class=3DwvarootCSS>
            <DIV class=3DwvanCSS style=3D"BACKGROUND-COLOR: #c3d9ff">
            <TABLE width=3D"100%">
              <TBODY>
              <TR>
                <TD>
                  <DIV class=3Dh>
                  <DIV class=3D"w4 h l" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                  <DIV class=3D"w4 h r" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                  <DIV class=3Dc></DIV></DIV>
                  <DIV class=3Dh>
                  <DIV class=3D"w2 h l" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                  <DIV class=3D"w2 h r" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                  <DIV class=3Dc></DIV></DIV>
                  <DIV class=3Dh>
                  <DIV class=3D"w1 h l" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                  <DIV class=3D"w1 h r" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                  <DIV class=3Dc></DIV></DIV>
                  <DIV class=3D"w1 h l" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                  <DIV class=3D"w1 h r" id=3D_bg=20
                  style=3D"BACKGROUND-COLOR: =
#ffffff"></DIV></TD></TR></TBODY></TABLE>
            <TABLE class=3Dc width=3D"100%">
              <TBODY>
              <TR>
                <TD>
                  <DIV class=3Dwvan_CSS>
                  <TABLE width=3D"100%" valign=3D"middle">
                    <TBODY>
                    <TR>
                      <TD width=3D"100%"><SPAN=20
                        class=3DwvantCSS></SPAN><SPAN><SPAN><IMG =
class=3DwvansiCSS=20
                        =
src=3D"http://wenda.tianya.cn/wenda/images/v1230288456/home.gif"></SPAN> =

                        <SPAN class=3DwvantCSS><A class=3Dwvant_CSS=20
                        =
href=3D"http://wenda.tianya.cn/wenda/">=E9=A6=96=E9=A1=B5</A> =
</SPAN><SPAN=20
                        class=3Dwvant_CSS=20
                        style=3D"FONT-WEIGHT: =
normal">&nbsp;-&nbsp;</SPAN> <SPAN=20
                        class=3D"wvant_CSS =
wvantCSS">=E5=82=85=E7=AB=8B=E5=8F=B6fft=E5=8E=9F=E7=90=86=E6=98=AF=E4=BB=
=80=E4=B9=88=EF=BC=9F</SPAN>=20
</SPAN></TD>
                      <TD class=3DwvarstCSS vAlign=3Dcenter =
width=3D"1%">
                        <TABLE class=3DwvarstCSS valign=3D"middle">
                          <TBODY>
                          <TR>
                            <TD class=3DwvarstCSS vAlign=3Dcenter><A=20
                              =
href=3D"http://wenda.tianya.cn/wenda/rss_v2_0_msgs.xml?tid=3D184ed7436b6a=
9528"=20
                              target=3D_blank><IMG=20
                              style=3D"DISPLAY: inline; VERTICAL-ALIGN: =
middle"=20
                              =
src=3D"http://wenda.tianya.cn/wenda/images/v1230288456/feed.gif"></A></TD=
>
                            <TD class=3DwvarstCSS vAlign=3Dcenter><A=20
                              class=3DwvarsCSS=20
                              =
href=3D"http://wenda.tianya.cn/wenda/rss_v2_0_msgs.xml?tid=3D184ed7436b6a=
9528"=20
                              =
target=3D_blank>RSS</A></TD></TR></TBODY></TABLE></TD>
                      <TD=20
                style=3D"WIDTH: =
10px">&nbsp;</TD></TR></TBODY></TABLE></DIV></TD></TR></TBODY></TABLE></D=
IV>
            <DIV class=3DwvavbCSS style=3D"BACKGROUND-COLOR: #ffffff">
            <DIV class=3DwvrootCSS style=3D"BACKGROUND-COLOR: #ffffff">
            <TABLE class=3DwvtbCSS>
              <COLGROUP>
              <COL>
              <COL width=3D208></COLGROUP>
              <TBODY>
              <TR>
                <TD class=3DwvlpCSS id=3Dwvlp>
                  <DIV=20
                  style=3D"PADDING-RIGHT: 0px; PADDING-LEFT: 5px; =
PADDING-BOTTOM: 5px; PADDING-TOP: 5px">
                  <DIV style=3D"MARGIN: 5px 5px 10px"><A =
class=3DwlcommonCSS=20
                  =
href=3D"http://wenda.tianya.cn/wenda/label?lid=3D0a2e080fec1ff225">=C2=AB=
=20
                  =
=E8=BF=94=E5=9B=9E=E9=97=AE=E9=A2=98=E5=88=97=E8=A1=A8</A> </DIV>
                  <DIV class=3DwpcprootCSS>
                  <DIV style=3D"BACKGROUND-COLOR: #f2f6ff">
                  <TABLE width=3D"100%">
                    <TBODY>
                    <TR>
                      <TD>
                        <DIV class=3Dh id=3D_bd =
style=3D"BACKGROUND-COLOR: #c3d9ff">
                        <DIV class=3D"w4 h l" id=3D_bg=20
                        style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                        <DIV class=3D"w4 h r" id=3D_bg=20
                        style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                        <DIV class=3Dc></DIV></DIV>
                        <DIV class=3Dh id=3D_bd =
style=3D"BACKGROUND-COLOR: #c3d9ff">
                        <DIV class=3D"w2 h l" id=3D_bg=20
                        style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                        <DIV class=3D"w2 h r" id=3D_bg=20
                        style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                        <DIV class=3Dc></DIV></DIV>
                        <DIV class=3D"w1 h l" id=3D_bg=20
                        style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                        <DIV class=3D"w1 h r" id=3D_bg=20
                        style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                        <DIV class=3D"w3 h l" id=3D_bd=20
                        style=3D"BACKGROUND-COLOR: #c3d9ff"></DIV>
                        <DIV class=3D"w3 h r" id=3D_bd=20
                        style=3D"BACKGROUND-COLOR: #c3d9ff"></DIV>
                        <DIV class=3Dc></DIV>
                        <DIV class=3D"w1 h l" id=3D_bg=20
                        style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                        <DIV class=3D"w1 h r" id=3D_bg=20
                        style=3D"BACKGROUND-COLOR: #ffffff"></DIV>
                        <DIV class=3D"w2 h l" id=3D_bd=20
                        style=3D"BACKGROUND-COLOR: #c3d9ff"></DIV>
                        <DIV class=3D"w2 h r" id=3D_bd=20
                        style=3D"BACKGROUND-COLOR: #c3d9ff"></DIV>
12345

⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -