att(db);2*f2-f1;pgm:diffdis1
       0
fd=2f2-f1,F1,f2;RF     1.00000    
complex distortion fourier amplitude
complex f1 amplitude
complex f2 amplitude
a/dgain,a1,a2
     1.00000         4.95000         4.95000    
     546.875         468.750         507.812    
    1.165286E-04    8.774868E-04
    -.736137         .310562    
    -.669947         .374801    
     585.937         429.687         507.812    
    2.872091E-05    9.811611E-04
    -.803679         .234797    
    -.670550         .374814    
     625.000         390.625         507.812    
    3.809910E-04    1.216334E-03
    -.873775         .146711    
    -.670497         .374503    
     664.062         351.562         507.812    
    1.049328E-03    1.369088E-03
    -.949751        3.780872E-02
    -.670234         .374200    
     703.125         312.500         507.812    
    2.027679E-03    1.011910E-03
    -1.02845        -.107045    
    -.669693         .373731    
     742.187         273.437         507.812    
    2.366832E-03   -1.940369E-04
    -1.09291        -.304853    
    -.669849         .373484    
     781.250         234.375         507.812    
    1.900948E-03   -1.117324E-03
    -1.11573        -.565873    
    -.669837         .373237    
     820.312         195.312         507.812    
    1.163908E-03   -1.404260E-03
    -1.04631        -.891506    
    -.669567         .372855    
     859.375         156.250         507.812    
    6.027706E-04   -1.381333E-03
    -.823323        -1.25112    
    -.669773         .372880    
     898.437         117.188         507.812    
    2.025811E-04   -1.273139E-03
    -.351237        -1.56742    
    -.669622         .372774    
     937.500         78.1250         507.812    
   -5.831826E-04   -6.671904E-04
     .487542        -1.56016    
    -.669926         .373089    
     976.562         39.0625         507.812    
   -1.870065E-04   -6.830649E-05
     1.24175        -.346093    
    -.669724         .373059    
a/dgain,a1,a2
     1.00000         3.50433         3.50433    
     546.875         468.750         507.812    
    4.004389E-04    8.892184E-04
    -.520771         .218770    
    -.474317         .264423    
     585.937         429.687         507.812    
    6.206820E-04    6.555710E-04
    -.567852         .165431    
    -.474388         .264257    
     625.000         390.625         507.812    
    8.383521E-04    4.086355E-04
    -.617597         .103651    
    -.474474         .264120    
     664.062         351.562         507.812    
    9.531281E-04    2.706936E-04
    -.672014        2.670988E-02
    -.474657         .263865    
     703.125         312.500         507.812    
    1.142409E-03   -1.435946E-04
    -.728292       -7.618302E-02
    -.474673         .263611    
     742.187         273.437         507.812    
    1.133048E-03   -6.570558E-04
    -.773518        -.216038    
    -.474599         .263236    
     781.250         234.375         507.812    
    6.950784E-04   -1.055454E-03
    -.789745        -.400687    
    -.474727         .262956    
     820.312         195.312         507.812    
    3.420273E-04   -1.035972E-03
    -.740661        -.631289    
    -.474830         .262772    
     859.375         156.250         507.812    
    3.599390E-05   -9.485318E-04
    -.582483        -.886023    
    -.474769         .262562    
     898.437         117.188         507.812    
   -3.071027E-04   -8.578866E-04
    -.248485        -1.11021    
    -.474658         .262484    
     937.500         78.1250         507.812    
   -6.176592E-04   -2.025386E-04
     .344233        -1.10500    
    -.474509         .262270    
     976.562         39.0625         507.812    
   -9.810866E-05    1.932881E-05
     .878875        -.246118    
    -.474595         .262398    
a/dgain,a1,a2
     1.00000         2.48088         2.48088    
     546.875         468.750         507.812    
    4.961321E-04    4.167594E-04
    -.354369         .147867    
    -.323087         .178905    
     585.937         429.687         507.812    
    5.600248E-04    1.354200E-04
    -.386017         .111794    
    -.323235         .178692    
     625.000         390.625         507.812    
    5.689037E-04   -1.324282E-04
    -.419760        7.029611E-02
    -.323367         .178541    
     664.062         351.562         507.812    
    4.295297E-04   -3.752341E-04
    -.456861        1.823305E-02
    -.323470         .178361    
     703.125         312.500         507.812    
    2.219221E-04   -4.407463E-04
    -.495356       -5.152816E-02
    -.323537         .178279    
     742.187         273.437         507.812    
    8.081975E-05   -5.550450E-04
    -.526554        -.146965    
    -.323841         .177978    
     781.250         234.375         507.812    
   -1.949149E-04   -4.775482E-04
    -.537884        -.272721    
    -.323898         .177729    
     820.312         195.312         507.812    
   -2.638919E-04   -4.249546E-04
    -.504789        -.430133    
    -.324009         .177426    
     859.375         156.250         507.812    
   -3.695600E-04   -2.970453E-04
    -.396988        -.603554    
    -.324170         .177422    
     898.437         117.188         507.812    
   -3.989716E-04   -1.744853E-04
    -.168940        -.756600    
    -.324258         .177587    
     937.500         78.1250         507.812    
   -2.139107E-04    2.167111E-04
     .235454        -.752883    
    -.324362         .177615    
     976.562         39.0625         507.812    
   -7.257232E-06    4.444312E-05
     .597380        -.166335    
    -.324474         .177559    
a/dgain,a1,a2
     1.00000         1.75633         1.75633    
     546.875         468.750         507.812    
    3.600444E-04    1.026476E-04
    -.250993         .103869    
    -.229213         .125944    
     585.937         429.687         507.812    
    2.817821E-04   -9.026352E-05
    -.272989        7.849592E-02
    -.229284         .125862    
     625.000         390.625         507.812    
    2.256017E-04   -2.723334E-04
    -.296926        4.941085E-02
    -.229507         .125763    
     664.062         351.562         507.812    
    4.670866E-05   -3.740196E-04
    -.323301        1.259966E-02
    -.229689         .125834    
     703.125         312.500         507.812    
   -1.997816E-04   -2.923105E-04
    -.350409       -3.688791E-02
    -.229752         .125723    
     742.187         273.437         507.812    
   -2.883377E-04   -1.737099E-04
    -.372538        -.103983    
    -.229938         .125666    
     781.250         234.375         507.812    
   -2.780596E-04   -1.099998E-05
    -.380715        -.192872    
    -.230030         .125524    
     820.312         195.312         507.812    
   -2.401386E-04    8.362811E-06
    -.357055        -.304620    
    -.230239         .125393    
     859.375         156.250         507.812    
   -1.643166E-04   -9.548654E-06
    -.280735        -.427191    
    -.230242         .125319    
     898.437         117.188         507.812    
   -1.902054E-04    1.143135E-04
    -.119787        -.535519    
    -.230378         .125369    
     937.500         78.1250         507.812    
   -2.376497E-05    1.741668E-04
     .166895        -.532170    
    -.230464         .125358    
     976.562         39.0625         507.812    
    1.409713E-05    4.037654E-05
     .424954        -.118773    
    -.230546         .125379    
a/dgain,a1,a2
     3.16227         1.24338         1.24338    
     546.875         468.750         507.812    
    6.739525E-04   -2.723923E-04
    -.604177         .247973    
    -.552701         .301317    
     585.937         429.687         507.812    
    2.828341E-04   -5.481502E-04
    -.656212         .187185    
    -.552642         .301129    
     625.000         390.625         507.812    
   -5.662485E-05   -6.414067E-04
    -.713587         .117565    
    -.552957         .301052    
     664.062         351.562         507.812    
   -1.823116E-04   -6.159055E-04
    -.776713        2.921184E-02
    -.553186         .300986    
     703.125         312.500         507.812    
   -4.080916E-04   -5.370625E-04
    -.841201       -8.911389E-02
    -.553371         .301102    
     742.187         273.437         507.812    
   -6.822639E-04   -8.906034E-06
    -.894177        -.249645    
    -.553292         .301030    
     781.250         234.375         507.812    
   -3.864549E-04    3.338428E-04
    -.914374        -.463368    
    -.553679         .300924    
     820.312         195.312         507.812    
   -2.105107E-04    4.014408E-04
    -.858362        -.731022    
    -.553740         .300558    
     859.375         156.250         507.812    
   -2.181106E-04    3.353374E-04
    -.675007        -1.02601    
    -.553869         .300377    
     898.437         117.188         507.812    
   -3.330113E-05    3.601296E-04
    -.287826        -1.28717    
    -.554205         .300524    
     937.500         78.1250         507.812    
    1.276009E-04    4.008114E-04
     .400611        -1.28011    
    -.554611         .300750    
     976.562         39.0625         507.812    
    2.035020E-04   -8.336564E-05
     1.02334        -.283896    
    -.554658         .300717    
a/dgain,a1,a2
     3.16227         .880247         .880247    
     546.875         468.750         507.812    
   -5.956041E-05    1.350008E-04
    -.427846         .174455    
    -.392074         .212773    
     585.937         429.687         507.812    
   -1.062113E-04    1.386764E-04
    -.464825         .132032    
    -.392187         .212921    
     625.000         390.625         507.812    
   -7.227747E-05    5.867773E-05
    -.505206        8.255035E-02
    -.392002         .212699    
     664.062         351.562         507.812    
    1.105701E-04   -5.389300E-05
    -.549328        1.962808E-02
    -.392164         .212964    
     703.125         312.500         507.812    
   -8.796815E-06   -1.378923E-04
    -.594441       -6.333292E-02
    -.392028         .212952    
     742.187         273.437         507.812    
   -2.019384E-04   -1.883702E-06
    -.632763        -.176417    
    -.392003         .213096    
     781.250         234.375         507.812    
   -2.425845E-04    1.797143E-05
    -.647557        -.327855    
    -.391770         .213163    
     820.312         195.312         507.812    
   -2.046179E-04    1.380949E-04
    -.607690        -.518090    
    -.391673         .212876    
     859.375         156.250         507.812    
   -4.174806E-05    2.708111E-04
    -.477404        -.726429    
    -.391783         .212795    
     898.437         117.188         507.812    
    2.698408E-05    1.893067E-04
    -.204210        -.912535    
    -.391882         .212653    
     937.500         78.1250         507.812    
    2.488303E-04    8.411317E-05
     .287154        -.907310    
    -.391821         .212536    
     976.562         39.0625         507.812    
   -2.036881E-05    9.504112E-05
     .715140        -.200291    
    -.392066         .212743    
a/dgain,a1,a2
     3.16227         .623167         .623167    
     546.875         468.750         507.812    
   -7.553442E-05    4.603902E-04
    -.291470         .119081    
    -.267143         .144719    
     585.937         429.687         507.812    
    1.467015E-04    2.471192E-04
    -.316648        9.029943E-02
    -.267009         .144590    
     625.000         390.625         507.812    
    1.830044E-04    9.872339E-05
    -.344916        5.620235E-02
    -.267093         .144628    
     664.062         351.562         507.812    
    2.831912E-04    1.060084E-04
    -.374297        1.319055E-02
    -.266791         .144732    
     703.125         312.500         507.812    
    2.278729E-04   -2.842920E-04
    -.405093       -4.330385E-02
    -.266714         .144647    
     742.187         273.437         507.812    
   -4.079797E-06   -3.044095E-04
    -.431266        -.120061    
    -.266556         .144659    
     781.250         234.375         507.812    
   -2.217565E-04   -2.652227E-04
    -.441311        -.224413    
    -.266113         .144181    
     820.312         195.312         507.812    
   -1.406160E-04    1.804649E-04
    -.413837        -.353217    
    -.266416         .144444    
     859.375         156.250         507.812    
   -1.726773E-04    3.314461E-04
    -.325312        -.494954    
    -.266200         .144216    
     898.437         117.188         507.812    
    7.490124E-05    2.537020E-04
    -.141078        -.620769    
    -.266098         .143984    
     937.500         78.1250         507.812    
    6.636998E-06    1.164335E-04
     .193995        -.618275    
    -.266095         .144025    
     976.562         39.0625         507.812    
    8.513269E-05   -1.330519E-04
     .490958        -.137184    
    -.266217         .143776    
a/dgain,a1,a2
     9.99999         .441169         .441169    
     546.875         468.750         507.812    
   -6.199608E-05    1.351180E-03
    -.655292         .269741    
    -.601240         .325773    
     585.937         429.687         507.812    
    6.155067E-04    5.755150E-04
    -.714353         .205622    
    -.601323         .325901    
     625.000         390.625         507.812    
    5.261104E-04    3.713858E-04
    -.778176         .127780    
    -.600757         .324543    
     664.062         351.562         507.812    
    5.365980E-04    6.259426E-04
    -.844904        3.131661E-02
    -.601093         .325167    
     703.125         312.500         507.812    
    2.893785E-04   -3.967737E-04
    -.914124       -9.523821E-02
    -.601168         .324624    
     742.187         273.437         507.812    
    1.588698E-05   -3.238088E-04
    -.975140        -.270155    
    -.600359         .324248    
     781.250         234.375         507.812    
   -6.104936E-04   -2.491283E-04
    -.997386        -.505391    
    -.600120         .324179    
     820.312         195.312         507.812    
   -1.855999E-04    6.001123E-06
    -.931816        -.797730    
    -.600058         .323802    
     859.375         156.250         507.812    
    1.719698E-04   -2.386223E-06
    -.731545        -1.11272    
    -.599891         .323487    
     898.437         117.188         507.812    
    2.984637E-04    2.210598E-04
    -.316716        -1.40213    
    -.599731         .323198    
     937.500         78.1250         507.812    
    7.470965E-05   -6.460666E-05
     .431513        -1.40278    
    -.599507         .322766    
     976.562         39.0625         507.812    
    1.765739E-04    1.609698E-04
     1.11990        -.299846    
    -.599634         .322644    
a/dgain,a1,a2
     9.99999         .312324         .312324    
     546.875         468.750         507.812    
    5.026145E-04    5.985822E-04
    -.475601         .195310    
    -.437250         .234856    
     585.937         429.687         507.812    
    4.191904E-04    6.676873E-04
    -.518907         .149873    
    -.437104         .235074    
     625.000         390.625         507.812    
   -1.269745E-04   -1.778310E-04
    -.565535        9.316045E-02
    -.438022         .234695    
     664.062         351.562         507.812    
    6.072996E-04    2.700062E-04
    -.613792        2.296767E-02
    -.438527         .234473    
     703.125         312.500         507.812    
    3.343062E-04   -1.488047E-04
    -.665642       -6.886739E-02
    -.437446         .233878    
     742.187         273.437         507.812    
   -1.313529E-04   -1.856985E-04
    -.710597        -.196222    
    -.437466         .234406    
     781.250         234.375         507.812    
   -2.611161E-04   -1.730177E-04
    -.726001        -.369598    
    -.437326         .234629    
     820.312         195.312         507.812    
   -7.977660E-04   -1.514873E-04
    -.678664        -.581694    
    -.437097         .233689    
     859.375         156.250         507.812    
    3.177316E-05   -3.648605E-05
    -.532691        -.813282    
    -.437212         .233560    
     898.437         117.188         507.812    
    1.265039E-05    9.982848E-05
    -.229068        -1.01825    
    -.437139         .233388    
     937.500         78.1250         507.812    
    6.632239E-05    4.064448E-04
     .319371        -1.01383    
    -.437024         .233551    
     976.562         39.0625         507.812    
    8.016788E-05    2.539712E-04
     .799669        -.229047    
    -.437057         .232726    
a/dgain,a1,a2
     9.99999         .221108         .221108