// Butterworth BRF
// Sampling Frequency =   44100.0
// cutoff1 =    2000.0
// cutoff2 =    5000.0
// Order = 3rd
// Quantized by 15 [bits]
// **** 1st biquad ****
    assign a0_A = sw0 == 1'b0 ? 16'b0011111111111111 : 16'b0011010001110010;
    assign a1_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1010000110111101;
    assign a2_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0011010001110010;
    assign b1_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0101011100011011;
    assign b2_A = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1100111111110100;
// **** 2nd biquad ****
    assign a0_B = sw0 == 1'b0 ? 16'b0011111111111111 : 16'b0011110111001010;
    assign a1_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1001000011110001;
    assign a2_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0011110111001010;
    assign b1_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0111001010100111;
    assign b2_B = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1100100000000011;
// **** 3rd biquad ****
    assign a0_C = sw0 == 1'b0 ? 16'b0011111111111111 : 16'b0011010010011000;
    assign a1_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1010000101111001;
    assign a2_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0011010010011000;
    assign b1_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b0101111010000111;
    assign b2_C = sw0 == 1'b0 ? 16'b0000000000000000 : 16'b1101011011010000;