#define ORDER? ? ? ? (27)? ? ? ? ? ? ? ? ? ? ? ? //階數

extern double Buffer[ORDER];? ? ? ? //采樣歷史數據

extern double Gains[ORDER+1];? ? ? ? //增益數據

double Fir(double Input)

{

double ? ? ? ? ? ? ? ? Output=0.0;? ? ? ? //數據輸出

unsigned int Index;? ? ? ? ? ? ? ? //下標索引

//采樣數據移位

for(Index=ORDER;Index>0;Index--) Buffers[Index]=Buffers[Index-1];

Buffers[0]=Input;

//計算輸出

for(Index=0;Index

{

Output+=Gains[Index]*Buffers[Index];

}

return Output;

}

double Buffer[ORDER+1];

//27階FIR橢圓低通濾波系數

//Fsample=1M，Fpass=10K, Gpass=1; Stop=100K, Gstop=0.001

double Gains[ORDER+1]=

{

0.00059697504964033668,? ?? ?? ?? ???/* Expression: 0.00059697504964033668

* Referenced by: '/b(1)'

*/

0.0015403196387599274,? ?? ?? ?? ?? ?/* Expression: 0.0015403196387599274

* Referenced by: '/b(2)'

*/

0.0033064320276585081,? ?? ?? ?? ?? ?/* Expression: 0.0033064320276585081

* Referenced by: '/b(3)'

*/

0.0061113563487949557,? ?? ?? ?? ?? ?/* Expression: 0.0061113563487949557

* Referenced by: '/b(4)'

*/

0.010163018665706843,? ?? ?? ?? ?? ? /* Expression: 0.010163018665706843

* Referenced by: '/b(5)'

*/

0.01556871821436694,? ?? ?? ?? ?? ???/* Expression: 0.01556871821436694

* Referenced by: '/b(6)'

*/

0.022287913896844945,? ?? ?? ?? ?? ? /* Expression: 0.022287913896844945

* Referenced by: '/b(7)'

*/

0.030101200648240893,? ?? ?? ?? ?? ? /* Expression: 0.030101200648240893

* Referenced by: '/b(8)'

*/

0.038603810412670289,? ?? ?? ?? ?? ? /* Expression: 0.038603810412670289

* Referenced by: '/b(9)'

*/

0.047231317739074019,? ?? ?? ?? ?? ? /* Expression: 0.047231317739074019

* Referenced by: '/b(10)'

*/

0.055313182265383343,? ?? ?? ?? ?? ? /* Expression: 0.055313182265383343

* Referenced by: '/b(11)'

*/

0.062153319101224389,? ?? ?? ?? ?? ? /* Expression: 0.062153319101224389

* Referenced by: '/b(12)'

*/

0.067119721211364419,? ?? ?? ?? ?? ? /* Expression: 0.067119721211364419

* Referenced by: '/b(13)'

*/

0.069732498345159072,? ?? ?? ?? ?? ? /* Expression: 0.069732498345159072

* Referenced by: '/b(14)'

*/

0.069732498345159072,? ?? ?? ?? ?? ? /* Expression: 0.069732498345159072

* Referenced by: '/b(15)'

*/

0.067119721211364419,? ?? ?? ?? ?? ? /* Expression: 0.067119721211364419

* Referenced by: '/b(16)'

*/

0.062153319101224389,? ?? ?? ?? ?? ? /* Expression: 0.062153319101224389

* Referenced by: '/b(17)'

*/

0.055313182265383343,? ?? ?? ?? ?? ? /* Expression: 0.055313182265383343

* Referenced by: '/b(18)'

*/

0.047231317739074019,? ?? ?? ?? ?? ? /* Expression: 0.047231317739074019

* Referenced by: '/b(19)'

*/

0.038603810412670289,? ?? ?? ?? ?? ? /* Expression: 0.038603810412670289

* Referenced by: '/b(20)'

*/

0.030101200648240893,? ?? ?? ?? ?? ? /* Expression: 0.030101200648240893

* Referenced by: '/b(21)'

*/

0.022287913896844945,? ?? ?? ?? ?? ? /* Expression: 0.022287913896844945

* Referenced by: '/b(22)'

*/

0.01556871821436694,? ?? ?? ?? ?? ???/* Expression: 0.01556871821436694

* Referenced by: '/b(23)'

*/

0.010163018665706843,? ?? ?? ?? ?? ? /* Expression: 0.010163018665706843

* Referenced by: '/b(24)'

*/

0.0061113563487949557,? ?? ?? ?? ?? ?/* Expression: 0.0061113563487949557

* Referenced by: '/b(25)'

*/

0.0033064320276585081,? ?? ?? ?? ?? ?/* Expression: 0.0033064320276585081

* Referenced by: '/b(26)'

*/

0.0015403196387599274,? ?? ?? ?? ?? ?/* Expression: 0.0015403196387599274

* Referenced by: '/b(27)'

*/

0.00059697504964033668? ?? ?? ?? ?? ?/* Expression: 0.00059697504964033668

* Referenced by: '/b(28)'

*/

};

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