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2003 Aug 11
0
Designing and incorporating a digital filter
...designed by mkfilter/mkshape/gencode A.J. Fisher
Command line: /www/usr/fisher/helpers/mkfilter -Bu -Bp -o 5 -a
1.0000000000e-02 1.0000000000e-01 -Z 2.0000000000e-01 -l */
#define NZEROS 12
#define NPOLES 12
#define GAIN 1.548068051e+03
static float xv[NZEROS+1], yv[NPOLES+1];
static void filterloop()
{ for (;;)
{ xv[0] = xv[1]; xv[1] = xv[2]; xv[2] = xv[3]; xv[3] = xv[4]; xv[4] =
xv[5]; xv[5] = xv[6]; xv[6] = xv[7]; xv[7] = xv[8]; xv[8] = xv[9]; xv[9] =
xv[10]; xv[10] = xv[11]; xv[11] = xv[12];
xv[12] = `next input value' / GAIN;
yv[0] = yv[1]; yv[1] = yv[2]; yv[2]...