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$$$$ RESPOWSP NOTICE  CHAT      11/09/12    21:17:58     7124           
                                             DATE     11/09/12

    Procedure RESPOWSP                       Voir aussi : PSRS
    ------------------   
    EVOL1_PS = RESPOWSP EVOL2_RS FLOT1_TE LREEL1_AMOR (TAB1);


    Description :
    _____________

    Calculation of the power spectrum EVOL1_PS (including one curve)
    of a signal of period FLOT1_TE associated with N spectra of
    response EVOL2_RS (which may include N curves) corresponding
    to N dampings LREEL1_AMOR. This inverse transformation does
    make sense in mathematical analysis only if EVOL2_RS contains
    a single curve. If N>1, EVOL1_PS must be considered to be a
    mean spectrum.

    In order to stabilize the convergence process, the iterations 
    have to be performed using Hanning filter (HANN operator).

    Options :
    _________

    The options are contained in TAB1. (TABLE type object)

    index  pointed object    comments
               type

     GPRP   MOT           stands for the physical magnitude of the
                          response :
                          'ACCE'(leration), 'VITE'(sse) (velocity) or
                          'DEPL'(acement relatif) (relative
                          displacement). The default is 'ACCE'.

     GPAB   MOT           stands for the physical magnitude in the 
                          response abscissa : 'PERI'(od) or 
                          'FREQ'(uency).
                          The default is 'PERI'.

     FRCO   FLOTTANT      indicates the signal cut frequency.
                          The default is 25 Hz.

     FFPS   LISTREEL      gives the calculation reticle in frequency
                          of the power spectrum. The default is
                          a geometrical progression ranging between 
                          1/FLOT1_TE and the cut frequency whose ratio  
                          is (1+2*KSI), or KSI=MIN LREEL1_AMOR.

     TTRS   LISTREEL      gives the calculation reticle in period
                          of the power spectrum. The default is that
                          of the PSRS operator.

     DIST   MOT           stands for the type of distribution chosen 
                          for estimating the place of the spectrum
                          of response maxima : 'CRAM'(er) or 
                          'NEWG'(umg).  The default is 'CRAM'.

     JMAX   ENTIER        stands for the maximum number of
                          iterations permitted.
                          The default is 15.

     JHAN   ENTIER        stands for the number of iterations to 
                          include Hanning filtering. The default is JMAX.

     EMAX   FLOTTANT      stands for the error convergence limit.
                          The default is 1.E-2.

     LIST   LOGIQUE       indicates the possibility of displaying the
                          convergence process. The default is FAUX (false).