// Butterworth LPF
// Sampling Frequency =   44100.0
// cutoff1 =    3000.0
// Order = 6th
// Quantized by 15 [bits]
// **** 1st biquad ****
    assign a0_A = sw0 == 1'b0 ? 16'b0011111111111111 : 16'b0000001010011010;
    assign a1_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0000010100110100;
    assign a2_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0000001010011010;
    assign b1_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0110100100101111;
    assign b2_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1100110001101001;
// **** 2nd biquad ****
    assign a0_B = sw0 == 1'b0 ? 16'b0011111111111111 : 16'b0000001000111010;
    assign a1_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0000010001110100;
    assign a2_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0000001000111010;
    assign b1_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0101101000010000;
    assign b2_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1101110100000110;
// **** 3rd biquad ****
    assign a0_C = sw0 == 1'b0 ? 16'b0011111111111111 : 16'b0000001000001110;
    assign a1_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0000010000011101;
    assign a2_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0000001000001110;
    assign b1_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0101001100101010;
    assign b2_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1110010010011100;


//Butterworth HPF
//Sampling Frequency =   44100.0
//cutoff1 =   3000.00
//Order = 6th
//Quantized by 15 [bits]
// **** 1st biquad ****
    assign a0_A = sw0 == 1'b0 ? 16'b0011111111111111 : 16'b0011011100110011;
    assign a1_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1001000110011001;
    assign a2_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0011011100110011;
    assign b1_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0110100100110101;
    assign b2_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1100110001100110;
// **** 2nd biquad ****
    assign a0_B = sw0 == 1'b0 ? 16'b0011111111111111 : 16'b0010111101000101;
    assign a1_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1010000101110101;
    assign a2_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0010111101000101;
    assign b1_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0101101000011000;
    assign b2_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1101110100000010;
// **** 3rd biquad ****
    assign a0_C = sw0 == 1'b0 ? 16'b0011111111111111 : 16'b0010101110100110;
    assign a1_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1010100010110011;
    assign a2_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0010101110100110;
    assign b1_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0101001100110001;
    assign b2_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1110010010010111;


//Butterworth BPF
//Sampling Frequency =   44100.0
//cutoff1 =   2000.00
//cutoff2 =   4000.00
//Order = 3rd
//Quantized by 15 [bits]
// **** 1st biquad ****
    assign a0_A = sw0 == 1'b0 ? 16'b0011111111111111 : 16'b0000100000100010;
    assign a1_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0000000000000000;
    assign a2_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1111011111011110;
    assign b1_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0110010000110000;
    assign b2_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1100101010100000;
// **** 2nd biquad ****
    assign a0_B = sw0 == 1'b0 ? 16'b0011111111111111 : 16'b0000100011101001;
    assign a1_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0000000000000000;
    assign a2_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1111011100010111;
    assign b1_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0111010001111100;
    assign b2_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1100011000110001;
// **** 3rd biquad ****
    assign a0_C = sw0 == 1'b0 ? 16'b0011111111111111 : 16'b0000100000001000;
    assign a1_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0000000000000000;
    assign a2_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1111011111111000;
    assign b1_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0110011011100111;
    assign b2_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1101000000010010;


//Butterworth BRF
//Sampling Frequency =   44100.0
//cutoff1 =   2000.00
//cutoff2 =   4000.00
//Order = 3rd
//Quantized by 15 [bits]
// **** 1st biquad ****
    assign a0_A = sw0 == 1'b0 ? 16'b0011111111111111 : 16'b0011100010110000;
    assign a1_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1001011111000100;
    assign a2_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0011100010110000;
    assign b1_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0110010000111000;
    assign b2_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1100101010011011;
// **** 2nd biquad ****
    assign a0_B = sw0 == 1'b0 ? 16'b0011111111111111 : 16'b0011111000010100;
    assign a1_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1000110111011100;
    assign a2_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0011111000010100;
    assign b1_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0111010001111100;
    assign b2_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1100011000101111;
// **** 3rd biquad ****
    assign a0_C = sw0 == 1'b0 ? 16'b0011111111111111 : 16'b0011011111111010;
    assign a1_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1001100100010100;
    assign a2_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0011011111111010;
    assign b1_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0110011011101100;
    assign b2_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1101000000001100;