Fs = 8000; [b,a] = elliptical (Fs); freqz(b, a); fileID = fopen('coeff2.txt','w'); fprintf(fileID, 'double a[] = {'); fprintf(fileID, '%.15e, ', a); fprintf(fileID, '};\ndouble b[] = {'); fprintf(fileID, '%.15e, ', b); fprintf(fileID, '};'); fclose(fileID);