如何从FIR滤波器的参数来推测滤波器类型?
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如何从FIR滤波器的参数来推测滤波器类型?
以下为四组FIR滤波器参数,每组有16个参数,谁能告诉我每组参数都对应什么类型的滤波器?
第一组:
coefficient[0][0] = -6;
coefficient[0][1] = -4;
coefficient[0][2] = 13;
coefficient[0][3] = 16;
coefficient[0][4] = -18;
coefficient[0][5] = -41;
coefficient[0][6] = 23;
coefficient[0][7] = 154;
coefficient[0][8] = 222;
coefficient[0][9] = 154;
coefficient[0][10] = 23;
coefficient[0][11] = -41;
coefficient[0][12] = -18;
coefficient[0][13] = 16;
coefficient[0][14] = 13;
coefficient[0][15] = -4;
第二组:
coefficient[1][0] = 1;
coefficient[1][1] = 0;
coefficient[1][2] = 0;
coefficient[1][3] = 0;
coefficient[1][4] = 0;
coefficient[1][5] = 0;
coefficient[1][6] = 0;
coefficient[1][7] = 0;
coefficient[1][8] = 0;
coefficient[1][9] = 0;
coefficient[1][10] = 0;
coefficient[1][11] = 0;
coefficient[1][12] = 0;
coefficient[1][13] = 0;
coefficient[1][14] = 0;
coefficient[1][15] = 0;
第三组
coefficient[2][0] = 1;
coefficient[2][1] = 1;
coefficient[2][2] = 1;
coefficient[2][3] = 1;
coefficient[2][4] = 1;
coefficient[2][5] = 1;
coefficient[2][6] = 0;
coefficient[2][7] = 0;
coefficient[2][8] = 0;
coefficient[2][9] = 0;
coefficient[2][10] = 0;
coefficient[2][11] = 0;
coefficient[2][12] = 0;
coefficient[2][13] = 0;
coefficient[2][14] = 0;
coefficient[2][15] = 0;
第四组
coefficient[3][0] = -6;
coefficient[3][1] = -4;
coefficient[3][2] = 13;
coefficient[3][3] = 16;
coefficient[3][4] = -18;
coefficient[3][5] = -41;
coefficient[3][6] = 23;
coefficient[3][7] = 154;
coefficient[3][8] = 222;
coefficient[3][9] = 154;
coefficient[3][10] = 23;
coefficient[3][11] = -41;
coefficient[3][12] = -18;
coefficient[3][13] = 16;
coefficient[3][14] = 13;
coefficient[3][15] = -4;
以下为四组FIR滤波器参数,每组有16个参数,谁能告诉我每组参数都对应什么类型的滤波器?
第一组:
coefficient[0][0] = -6;
coefficient[0][1] = -4;
coefficient[0][2] = 13;
coefficient[0][3] = 16;
coefficient[0][4] = -18;
coefficient[0][5] = -41;
coefficient[0][6] = 23;
coefficient[0][7] = 154;
coefficient[0][8] = 222;
coefficient[0][9] = 154;
coefficient[0][10] = 23;
coefficient[0][11] = -41;
coefficient[0][12] = -18;
coefficient[0][13] = 16;
coefficient[0][14] = 13;
coefficient[0][15] = -4;
第二组:
coefficient[1][0] = 1;
coefficient[1][1] = 0;
coefficient[1][2] = 0;
coefficient[1][3] = 0;
coefficient[1][4] = 0;
coefficient[1][5] = 0;
coefficient[1][6] = 0;
coefficient[1][7] = 0;
coefficient[1][8] = 0;
coefficient[1][9] = 0;
coefficient[1][10] = 0;
coefficient[1][11] = 0;
coefficient[1][12] = 0;
coefficient[1][13] = 0;
coefficient[1][14] = 0;
coefficient[1][15] = 0;
第三组
coefficient[2][0] = 1;
coefficient[2][1] = 1;
coefficient[2][2] = 1;
coefficient[2][3] = 1;
coefficient[2][4] = 1;
coefficient[2][5] = 1;
coefficient[2][6] = 0;
coefficient[2][7] = 0;
coefficient[2][8] = 0;
coefficient[2][9] = 0;
coefficient[2][10] = 0;
coefficient[2][11] = 0;
coefficient[2][12] = 0;
coefficient[2][13] = 0;
coefficient[2][14] = 0;
coefficient[2][15] = 0;
第四组
coefficient[3][0] = -6;
coefficient[3][1] = -4;
coefficient[3][2] = 13;
coefficient[3][3] = 16;
coefficient[3][4] = -18;
coefficient[3][5] = -41;
coefficient[3][6] = 23;
coefficient[3][7] = 154;
coefficient[3][8] = 222;
coefficient[3][9] = 154;
coefficient[3][10] = 23;
coefficient[3][11] = -41;
coefficient[3][12] = -18;
coefficient[3][13] = 16;
coefficient[3][14] = 13;
coefficient[3][15] = -4;
截止频率(the cutoff frequency ):用来说明电路频率特性指标的特殊频率.当保持电路输入信号的幅度不变,改变频率使输出信号降至最大值的0.707倍,或某一特殊额定值时该频率称为截止频率.
阻带频率(the stopband frequency ):也是用来说明电路频率特性指标的特殊频率.当保持电路输入信号的幅度不变,改变频率使输出信号衰减60dB时,该频率称为阻带频率.
本人觉得响应的截止频率就是the cutoff frequency .
仅供参考啊!
阻带频率(the stopband frequency ):也是用来说明电路频率特性指标的特殊频率.当保持电路输入信号的幅度不变,改变频率使输出信号衰减60dB时,该频率称为阻带频率.
本人觉得响应的截止频率就是the cutoff frequency .
仅供参考啊!