切比雪夫低通滤波器及计算器

切比雪夫低通滤波器程序

算法大致流程

int16_t IIR_Filter(double *a, int Lenth_a, double *b, int Lenth_b, int16_t Input_Data, double *Memory_Buffer) { int Count=0; double Output_Data = 0; int Memory_Lenth = 0;IF(Lenth_a >= Lenth_b) Memory_Lenth = Lenth_a; else Memory_Lenth = Lenth_b; Output_Data += (*a) * Input_Data; //a(0)*x(n)for(Count = 1; Count < Lenth_a ;Count++) { Output_Data -= (*(a + Count)) * (*(Memory_Buffer + (Memory_Lenth - 1) - Count)); } //------------------------save data--------------------------// *(Memory_Buffer +Memory_Lenth-1 ) = Output_Data; Output_Data = 0; //----------------------------------------------------------// for(Count = 0; Count < Lenth_b ;Count++) { Output_Data += (*(b + Count)) * (*(Memory_Buffer + (Memory_Lenth - 1) - Count)); } //------------------------move data--------------------------// for(Count = 0 ; Count < Memory_Lenth -1 ; Count++) { *(Memory_Buffer + Count) = *(Memory_Buffer + Count + 1); } *(Memory_Buffer + Memory_Lenth - 1) = 0; //-----------------------------------------------------------// return (int16_t)Output_Data; }

切比雪夫参数计算器

计算器连接

硬件结构