ctr_mcu/snake_trunk/pedo_lpf_coeff.c

/********************************************//**
 歩数計で使用する、LPFのフィルタ係数
 $Id$
 ***********************************************/

#include "incs.h"

// =========================================================
#define TAP 64
#define FIL_COEFF_QUANT 10
const s8 lpf_coeff[]={
/*
Window Function Algorithm LPF
Sampling Frequency =     100.0
cutoff1 =   6.0000000
Tap Count =64
Kaiser Constant =  7.000000
Quantized by 11 [bits]
 */
/*         0,// [0]
         0,
         0,
         0,
         0,
         0,
         0,
         0,
*/
         1,// 8
         2,
         2,
         3,
         3,
         2,
         0,
        -2,
        -5,// 16
        -9,
       -13,
       -16,
       -16,
       -13,
        -6,
         4,
        18,// 24
        37,
        56,
        77,
        95,
       110,
       119,
       122,
       119,// 32
       110,
        95,
        77,
        56,
        37,
        18,
         4,
        -6,// 40
       -13,
       -16,
       -16,
       -13,
        -9,
        -5,
        -2,
         0,// 48
         2,
         3,
         3,
         2,
         2,
         1,
/*
         0,
         0,// 56
         0,
         0,
         0,
         0,
         0,
         0,
         0
*/
};