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📁 10种软件滤波方法的示例程序
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        <TR>
          =
<TD>=D2=D4=CF=C2=CA=C7=CE=D2=B1=E0=B5=C4=CA=BE=C0=FD=B3=CC=D0=F2=A3=AC=C8=
=E7=D3=D0=B2=BB=D7=E3=D6=AE=B4=A6=BB=B9=CD=FB=B8=F7=CE=BB=CD=AC=D0=D0=D6=B8=
=BD=CC<BR><BR>=BC=D9=B6=A8=B4=D38=CE=BBAD=D6=D0=B6=C1=C8=A1=CA=FD=BE=DD=A3=
=A8=C8=E7=B9=FB=CA=C7=B8=FC=B8=DF=CE=BB=B5=C4AD=BF=C9=B6=A8=D2=E5=CA=FD=BE=
=DD=C0=E0=D0=CD=CE=AAint),=D7=D3=B3=CC=D0=F2=CE=AAget_ad();<BR><BR>1=A1=A2=
=CF=DE=B8=B1=C2=CB=B2=A8<BR>/*&nbsp;&nbsp;A=D6=B5=BF=C9=B8=F9=BE=DD=CA=B5=
=BC=CA=C7=E9=BF=F6=B5=F7=D5=FB<BR>&nbsp;&nbsp;&nbsp;&nbsp;value=CE=AA=D3=D0=
=D0=A7=D6=B5=A3=ACnew_value=CE=AA=B5=B1=C7=B0=B2=C9=D1=F9=D6=B5&nbsp;&nbs=
p;<BR>&nbsp;&nbsp;&nbsp;&nbsp;=C2=CB=B2=A8=B3=CC=D0=F2=B7=B5=BB=D8=D3=D0=D0=
=A7=B5=C4=CA=B5=BC=CA=D6=B5&nbsp;&nbsp;*/<BR>#define=20
            A 10<BR><BR>char value;<BR><BR>char=20
            =
filter()<BR>{<BR>&nbsp;&nbsp;&nbsp;char&nbsp;&nbsp;new_value;<BR>&nbsp;&n=
bsp;&nbsp;new_value=20
            =3D get_ad();<BR>&nbsp;&nbsp;&nbsp;if ( ( new_value - value =
&gt; A )=20
            || ( value - new_value &gt; A=20
            )<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return=20
            value;<BR>&nbsp;&nbsp;&nbsp;return=20
            =
new_value;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>}=
<BR><BR>2=A1=A2=D6=D0=CE=BB=D6=B5=C2=CB=B2=A8=B7=A8<BR>/*&nbsp;&nbsp;N=D6=
=B5=BF=C9=B8=F9=BE=DD=CA=B5=BC=CA=C7=E9=BF=F6=B5=F7=D5=FB<BR>&nbsp;&nbsp;=
&nbsp;&nbsp;=C5=C5=D0=F2=B2=C9=D3=C3=C3=B0=C5=DD=B7=A8*/<BR>#define=20
            N&nbsp;&nbsp;11<BR><BR>char =
filter()<BR>{<BR>&nbsp;&nbsp;&nbsp;char=20
            value_buf[N];<BR>&nbsp;&nbsp;&nbsp;char=20
            count,i,j,temp;<BR>&nbsp;&nbsp;&nbsp;for (=20
            =
count=3D0;count&lt;N;count++)<BR>&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;value_buf[count]=20
            =3D=20
            =
get_ad();<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;delay();<BR>&nbsp;&nbsp;=
&nbsp;}<BR>&nbsp;&nbsp;&nbsp;for=20
            =
(j=3D0;j&lt;N-1;j++)<BR>&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;for=20
            =
(i=3D0;i&lt;N-j;i++)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if=20
            ( value_buf[i]&gt;value_buf[i+1]=20
            =
)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;temp=20
            =3D=20
            =
value_buf[i];<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;value_buf[i]=20
            =3D value_buf[i+1];=20
            =
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;value_buf[i+1]=20
            =3D=20
            =
temp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&n=
bsp;return=20
            =
value_buf[(N-1)/2];<BR>}&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR><BR>3=A1=A2=CB=E3=
=CA=F5=C6=BD=BE=F9=C2=CB=B2=A8=B7=A8<BR>/*<BR>*/<BR><BR>#define=20
            N 12<BR><BR>char=20
            filter()<BR>{<BR>&nbsp;&nbsp;&nbsp;int&nbsp;&nbsp;sum =3D=20
            0;<BR>&nbsp;&nbsp;&nbsp;for (=20
            =
count=3D0;count&lt;N;count++)<BR>&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp;&nbsp;sum=20
            + =3D=20
            =
get_ad();<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;delay();<BR>&nbsp;&nbsp;=
&nbsp;}<BR>&nbsp;&nbsp;&nbsp;return=20
            =
(char)(sum/N);<BR>}<BR><BR>4=A1=A2=B5=DD=CD=C6=C6=BD=BE=F9=C2=CB=B2=A8=B7=
=A8=A3=A8=D3=D6=B3=C6=BB=AC=B6=AF=C6=BD=BE=F9=C2=CB=B2=A8=B7=A8=A3=A9<BR>=
/*<BR>*/<BR>#define=20
            N 12 <BR><BR>char value_buf[N];<BR>char i=3D0;<BR><BR>char=20
            filter()<BR>{<BR>&nbsp;&nbsp;&nbsp;char=20
            =
count;<BR>&nbsp;&nbsp;&nbsp;int&nbsp;&nbsp;sum=3D0;<BR>&nbsp;&nbsp;&nbsp;=
value_buf[i++]=20
            =3D get_ad();<BR>&nbsp;&nbsp;&nbsp;if ( i =3D=3D N =
)&nbsp;&nbsp;&nbsp;i =3D=20
            0;<BR>&nbsp;&nbsp;&nbsp;for (=20
            =
count=3D0;count&lt;N,count++)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sum =

            =3D value_buf[count];<BR>&nbsp;&nbsp;&nbsp;return=20
            =
(char)(sum/N);<BR>}<BR><BR>5=A1=A2=D6=D0=CE=BB=D6=B5=C6=BD=BE=F9=C2=CB=B2=
=A8=B7=A8=A3=A8=D3=D6=B3=C6=B7=C0=C2=F6=B3=E5=B8=C9=C8=C5=C6=BD=BE=F9=C2=CB=
=B2=A8=B7=A8=A3=A9<BR>/*<BR>*/<BR>#define=20
            N 12<BR><BR>char filter()<BR>{<BR>&nbsp;&nbsp;&nbsp;char=20
            count,i,j;<BR>&nbsp;&nbsp;&nbsp;char=20
            =
value_buf[N];<BR>&nbsp;&nbsp;&nbsp;int&nbsp;&nbsp;sum=3D0;<BR>&nbsp;&nbsp=
;&nbsp;for&nbsp;&nbsp;(count=3D0;count&lt;N;count++)<BR>&nbsp;&nbsp;&nbsp=
;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;value_buf[count]=20
            =3D=20
            =
get_ad();<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;delay();<BR>&nbsp;&nbsp;=
&nbsp;}<BR>&nbsp;&nbsp;&nbsp;for=20
            =
(j=3D0;j&lt;N-1;j++)<BR>&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;for=20
            =
(i=3D0;i&lt;N-j;i++)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if=20
            ( value_buf[i]&gt;value_buf[i+1]=20
            =
)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nb=
sp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;temp=20
            =3D=20
            =
value_buf[i];<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;value_buf[i]=20
            =3D value_buf[i+1];=20
            =
<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nb=
sp;&nbsp;value_buf[i+1]=20
            =3D=20
            =
temp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&n=
bsp;for(count=3D1;count&lt;N-1;count++)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;=
&nbsp;sum=20
            +=3D value[count];<BR>&nbsp;&nbsp;&nbsp;return=20
            =
(char)(sum/(N-2));<BR>}<BR><BR>6=A1=A2=CF=DE=B7=F9=C6=BD=BE=F9=C2=CB=B2=A8=
=B7=A8<BR>/*<BR>*/&nbsp;&nbsp;<BR>=C2=D4=20
            =
=B2=CE=BF=BC=D7=D3=B3=CC=D0=F21=A1=A23<BR><BR>7=A1=A2=D2=BB=BD=D7=D6=CD=BA=
=F3=C2=CB=B2=A8=B7=A8<BR>/* =
=CE=AA=BC=D3=BF=EC=B3=CC=D0=F2=B4=A6=C0=ED=CB=D9=B6=C8=BC=D9=B6=A8=BB=F9=CA=
=FD=CE=AA100=A3=ACa=3D0~100=20
            */<BR><BR>#define a 50<BR><BR>char value;<BR><BR>char=20
            =
filter()<BR>{<BR>&nbsp;&nbsp;&nbsp;char&nbsp;&nbsp;new_value;<BR>&nbsp;&n=
bsp;&nbsp;new_value=20
            =3D get_ad();<BR>&nbsp;&nbsp;&nbsp;return (100-a)*value + =
a*new_value;=20
            =
<BR>}<BR><BR>8=A1=A2=BC=D3=C8=A8=B5=DD=CD=C6=C6=BD=BE=F9=C2=CB=B2=A8=B7=A8=
<BR>/* =
coe=CA=FD=D7=E9=CE=AA=BC=D3=C8=A8=CF=B5=CA=FD=B1=ED=A3=AC=B4=E6=D4=DA=B3=CC=
=D0=F2=B4=E6=B4=A2=C7=F8=A1=A3*/<BR><BR>#define=20
            N 12<BR><BR>char code coe[N] =3D =
{1,2,3,4,5,6,7,8,9,10,11,12};<BR>char=20
            code sum_coe =3D 1+2+3+4+5+6+7+8+9+10+11+12;<BR><BR>char=20
            filter()<BR>{<BR>&nbsp;&nbsp;&nbsp;char=20
            count;<BR>&nbsp;&nbsp;&nbsp;char=20
            =
value_buf[N];<BR>&nbsp;&nbsp;&nbsp;int&nbsp;&nbsp;sum=3D0;<BR>&nbsp;&nbsp=
;&nbsp;for=20
            =
(count=3D0,count&lt;N;count++)<BR>&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbs=
p;&nbsp;&nbsp;&nbsp;value_buf[count]=20
            =3D=20
            =
get_ad();<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;delay();<BR>&nbsp;&nbsp;=
&nbsp;}<BR>&nbsp;&nbsp;&nbsp;for=20
            =
(count=3D0,count&lt;N;count++)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;sum=
=20
            +=3D =
value_buf[count]*coe[count];<BR>&nbsp;&nbsp;&nbsp;return=20
            =
(char)(sum/sum_coe);<BR>}<BR><BR>9=A1=A2=CF=FB=B6=B6=C2=CB=B2=A8=B7=A8<BR=
><BR>#define N=20
            12<BR><BR>char filter()<BR>{<BR>&nbsp;&nbsp;&nbsp;char=20
            count=3D0;<BR>&nbsp;&nbsp;&nbsp;char=20
            new_value;<BR>&nbsp;&nbsp;&nbsp;new_value =3D=20
            get_ad();<BR>&nbsp;&nbsp;&nbsp;while (value=20
            =
!=3Dnew_value);<BR>&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&=
nbsp;count++;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if=20
            (count&gt;=3DN)&nbsp;&nbsp;&nbsp;return=20
            =
new_value;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;delay();<BR>&nbsp=
;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;new_value=20
            =3D =
get_ad();<BR>&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;return=20
            =
value;&nbsp;&nbsp;&nbsp;&nbsp;<BR>}<BR><BR>10=A1=A2=CF=DE=B7=F9=CF=FB=B6=B6=
=C2=CB=B2=A8=B7=A8<BR>/*<BR>*/<BR>=C2=D4=20
            =B2=CE=BF=BC=D7=D3=B3=CC=D0=F21=A1=A29<BR><BR>
            <P align=3Dcenter>
            <CENTER></CENTER>
            =
<P></P></TD></TR></TBODY></TABLE><BR></TD></TR></TBODY></TABLE><IMG =
height=3D5=20
src=3D"http://www.21icbbs.com/club/bbs/Images/blank.gif" width=3D1><BR>
<TABLE border=3D0 cellPadding=3D0 cellSpacing=3D0 width=3D"100%">
  <TBODY>
  <TR>
    <TD class=3Dpagehead =
noWrap>=CF=E0=B9=D8=CC=FB=D7=D3</TD></TR></TBODY></TABLE>
<UL></UL>
<UL>
  <LI><SPAN class=3Dtext9><IMG=20
  src=3D"http://www.21icbbs.com/club/bbs/images/emote/mood25.gif"> =
10=D6=D6=C8=ED=BC=FE=C2=CB=B2=A8=B7=BD=B7=A8=B5=C4=CA=BE=C0=FD=B3=CC=D0=F2=
=20
  - sparkstar <EM>2003-1-29 21:50:10</EM> <FONT =
color=3Ddarkblue>[ID:501711=20
  =B5=E3=BB=F7:293]</FONT> (3128 Bytes) <FONT color=3Dred>(5)</FONT> =
</SPAN>
  <UL>
    <LI><SPAN class=3Dtext9><IMG=20

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