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    
     4023.44         3945.31         3984.37    
    1.032450E-04   -6.317061E-04
    -1.72545       -1.050438E-02
    -1.68222         .273708    
     4179.68         3789.06         3984.37    
   -1.715125E-03    1.619494E-03
    -1.39594        -1.08275    
    -1.67993         .275830    
     4335.93         3632.81         3984.37    
    3.328577E-03   -7.147475E-04
    -.420508        -1.72337    
    -1.68099         .275150    
     4492.18         3476.56         3984.37    
   -1.418636E-03   -1.987012E-03
     .734189        -1.53029    
    -1.67895         .277430    
     4648.43         3320.31         3984.37    
    5.134582E-04    1.084917E-03
     1.36398        -.627172    
    -1.67832         .278153    
     4765.62         3203.12         3984.37    
   -5.513092E-04    1.127026E-03
     1.29573       -4.634459E-03
    -1.68024         .272483    
     4882.81         3085.94         3984.37    
    5.134433E-04   -8.699908E-04
     1.07089         .434900    
    -1.67869         .278178    
     5000.00         2968.75         3984.37    
    1.426054E-03   -2.450750E-04
     .786743         .704567    
    -1.67774         .277186    
     5117.18         2851.56         3984.37    
   -1.268493E-03   -8.760933E-04
     .478708         .891260    
    -1.68066         .274193    
     5234.37         2734.37         3984.37    
    1.451269E-03    2.902490E-05
     .135549         .973286    
    -1.67687         .276487    
     5351.56         2617.19         3984.37    
   -7.339928E-04   -1.688134E-04
    -.200039         .948593    
    -1.67829         .276639    
     5468.75         2500.00         3984.37    
   -5.460428E-04   -1.298883E-03
    -.524875         .826887    
    -1.67922         .274268    
     5585.93         2382.81         3984.37    
    1.454491E-04   -1.799503E-04
    -.802313         .588043    
    -1.67698         .277309    
     5703.12         2265.62         3984.37    
   -1.257183E-03   -1.525044E-04
    -.979851         .241866    
    -1.67589         .275614    
     5781.25         2187.50         3984.37    
   -7.114327E-04   -1.148523E-03
    -1.00688       -1.285823E-02
    -1.67833         .274361    
     5859.37         2109.37         3984.37    
    5.008765E-04   -4.366122E-05
    -.972632        -.257593    
    -1.67710         .276878    
     5937.50         2031.25         3984.37    
   -3.827303E-04    1.033611E-03
    -.889667        -.485309    
    -1.67974         .275247    
     6015.62         1953.13         3984.37    
    1.211554E-03    6.540120E-04
    -.764651        -.688208    
    -1.67668         .276362    
     6093.75         1875.00         3984.37    
    1.271964E-03    2.235124E-03
    -.607149        -.873327    
    -1.67485         .277461    
     6171.87         1796.88         3984.37    
   -4.106818E-05   -6.227084E-04
    -.403604        -1.04844    
    -1.68048         .275292    
     6250.00         1718.75         3984.37    
   -7.143111E-04    1.552945E-03
    -.125156        -1.19514    
    -1.67666         .278513    
     6328.12         1640.63         3984.37    
    1.293130E-03    1.029885E-04
     .234299        -1.26373    
    -1.67569         .277853    
     6406.25         1562.50         3984.37    
   -5.138307E-04   -4.521285E-04
     .634814        -1.19554    
    -1.67938         .274555    
     6484.37         1484.38         3984.37    
   -1.093622E-03   -1.055107E-04
     1.01122        -.979589    
    -1.67851         .277673    
     6562.50         1406.25         3984.37    
    1.949046E-04   -2.197305E-04
     1.30793        -.637562    
    -1.67639         .277233    
     6640.62         1328.13         3984.37    
   -5.054944E-04   -1.034930E-03
     1.47265        -.187066    
    -1.68044         .274880    
     6718.75         1250.00         3984.37    
   -1.754759E-03   -1.645438E-03
     1.46181         .297057    
    -1.67784         .277034    
     6796.87         1171.88         3984.37    
    4.098506E-05   -7.404548E-04
     1.28355         .745337    
    -1.67848         .276946    
     6875.00         1093.75         3984.37    
   -1.045177E-03   -7.533855E-04
     .952496         1.09234    
    -1.68160         .274456    
     6914.06         1054.69         3984.37    
    3.467763E-04   -1.561213E-03
     .750589         1.20426    
    -1.67876         .277408    
     6953.12         1015.63         3984.37    
    2.663631E-04    3.388762E-04
     .546843         1.27384    
    -1.67710         .278147    
     6992.18         976.562         3984.37    
   -4.109757E-04   -1.071365E-03
     .345895         1.30861    
    -1.68029         .275349    
     7031.25         937.500         3984.37    
   -7.553422E-04   -1.166746E-03
     .149050         1.31437    
    -1.67902         .277542    
     7070.31         898.437         3984.37    
    2.868869E-04    5.548098E-04
   -4.300800E-02     1.28411    
    -1.67667         .277697    
     7109.37         859.375         3984.37    
   -8.152516E-04   -1.552389E-03
    -.198957         1.18919    
    -1.68091         .273623    
     7148.43         820.312         3984.37    
    5.077072E-04   -2.302578E-03
    -.371698         1.19581    
    -1.67800         .276670    
     7187.50         781.250         3984.37    
    1.559541E-03   -1.158207E-03
    -.501394         1.06876    
    -1.67825         .277537    
     7226.56         742.187         3984.37    
   -6.075038E-04   -1.078289E-03
    -.583608         .964443    
    -1.68208         .274776    
     7265.62         703.125         3984.37    
   -1.992987E-04    1.999810E-03
    -.647173         .882031    
    -1.67833         .278501    
     7304.68         664.062         3984.37    
   -1.423343E-03    4.131740E-04
    -.686884         .827351    
    -1.67932         .275838    
     7343.75         625.000         3984.37    
    1.177096E-04   -6.435858E-04
    -.802761         .770692    
    -1.67967         .274475    
     7382.81         585.937         3984.37    
   -1.089989E-03    1.037422E-03
    -.892036         .698486    
    -1.67870         .276834    
     7421.87         546.875         3984.37    
   -1.334043E-03   -5.872212E-04
    -.980600         .611018    
    -1.67985         .273374    
     7460.93         507.812         3984.37    
   -2.388848E-04   -7.498609E-04
    -1.06201         .519223    
    -1.67893         .276765    
     7500.00         468.750         3984.37    
   -5.013782E-04    3.583774E-04
    -1.14720         .422674    
    -1.67785         .278467    
     7539.06         429.687         3984.37    
   -7.086608E-04    2.936346E-04
    -1.24337         .315412    
    -1.68055         .274295    
     7578.12         390.625         3984.37    
   -6.899673E-04   -2.801616E-04
    -1.35250         .184328    
    -1.67785         .277749    
     7617.18         351.562         3984.37    
   -7.519431E-04    4.428888E-04
    -1.46986        1.489191E-02
    -1.67740         .278167    
     7656.25         312.500         3984.37    
   -2.011678E-04    3.160632E-04
    -1.59614        -.210770    
    -1.68215         .275230    
     7695.31         273.437         3984.37    
   -3.468359E-04   -4.121873E-04
    -1.69932        -.533011    
    -1.67739         .277815    
     7734.37         234.375         3984.37    
    1.175331E-04    3.887636E-04
    -1.72829        -.969719    
    -1.67924         .277482    
     7773.43         195.312         3984.37    
    1.356562E-04   -2.080591E-03
    -1.58021        -1.51817    
    -1.67994         .275255    
     7812.50         156.250         3984.37    
   -5.326408E-05   -3.105041E-04
    -1.14386        -2.11372    
    -1.67749         .277731    
     7851.56         117.188         3984.37    
    4.501955E-05   -1.295397E-03
    -.228388        -2.57028    
    -1.67894         .276273