function [F1, F2] = exampleHBF(n)if nargin<1    n = 1endswitch n    case 1      [f1,q1,f2,q2] = HBFex1;    case 2      [f1,q1,f2,q2] = HBFex2;    case 3      [f1,q1,f2,q2] = Saramaki88;    case 4      [f1,q1,f2,q2] = Saramaki90;    otherwise      fprintf(2,'%s error: No code for example #%d available.\n',mfilename,n);endF1 = convertForm(f1,q1);F2 = convertForm(f2,q2);returnfunction F = convertForm(f,q)n = length(f);F = struct('val',cell(1,n),'csd',cell(1,n));for i=1:n    F(i).val = f(i);    csdrep = q(2*i-1:2*i,:);    F(i).csd = csdrep(:,csdrep(1,:)~=0);endreturnfunction [f1,q1,f2,q2] = HBFex1q1 = [	 0 -4 -5	 1  1  1	 0 -4 -5	-1 -1 -1	-1 -3 -5	 1  1  1	-3 -5  0	-1 -1  0 ];f1 = bunquantize(q1);q2 = [	-1 -3 -7	 1  1  1 	-2 -5 -7	-1  1  1	-3 -8  0	 1 -1  0	-4 -6 -8	-1 -1 -1	-4 -8  0	 1 -1  0	-5 -7 -8	-1 -1 -1	-5  0  0	 1  0  0	-6 -7  0	-1 -1  0	-7 -8  0	-1 -1  0        -6  0  0	 1  0  0 ];f2 = bunquantize(q2);returnfunction [f1,q1,f2,q2] = HBFex2%Coefficients from toolbox v2.0 documentationq1 = [	 0 -4 -7	 1 -1  1	-1 -3 -6	-1 -1 -1	-2 -4 -7	 1 -1  1 ];f1 = bunquantize(q1);q2 = [	-1 -3 -8	 1  1 -1	-2 -4 -9	-1  1 -1	-3 -5 -9	 1 -1  1	-4 -7 -8	-1  1  1	-5 -8 -11	 1 -1 -1        -6 -9 -11        -1  1 -1 ];f2 = bunquantize(q2);returnfunction [f1,q1,f2,q2] = Saramaki88()% Coefficients from "Efficient VLSI-Realizable Decimators for Sigma-Delta% Analog-to-Digital Converters," T. Saramaki and H. Tenhunen, ISCAS 1988,% pp 1525-2528.q1 = [	 0 -2	 1 -1	-2 -9	-1  1 ];f1 = bunquantize(q1);q2 = [	-1 -3  0 	 1  1  0 	-3 -5 -6	-1 -1 -1	-4 -6  0	 1  1  0 ];f2 = bunquantize(q2);returnfunction [f1,q1,f2,q2] = Saramaki90()% Coefficients from "Multiplier-Free Decimation Algorithms for Superresolution% Oversampled Converters," T. Saramaki, T. Karema, T. Ritoniemi, and H. Tenhunen% ISCAS 1990, vol. 4. pp 1525-2528.q1 = [	 0 -4 -5	 1  1  1	 0 -4 -5	-1 -1 -1	-1 -3 -5	 1  1  1	-3 -5 -20	-1 -1  1 ];f1 = bunquantize(q1);q2 = [	-1 -3 -7	 1  1  1 	-2 -5 -7	-1  1  1	-3 -8  0	 1 -1  0	-4 -6 -8	-1 -1 -1	-4 -8  0	 1 -1  0	-5 -7 -8	-1 -1 -1	-5  0  0	 1  0  0	-6 -7  0	-1 -1  0	-6  0  0	 1  0  0	-7 -8  0	-1 -1  0	-6  0  0	 1  0  0];f2 = bunquantize(q2);return