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$$$$ SIAR     NOTICE  CHAT      11/09/12    21:18:04     7124           
                                             DATE     11/09/12
                                             
  Operateur SIAR (SIgnaux ARtificiel)      Voir aussi :
    -----------------------------------   
    EVOL1 and/or EVOL2 and/or EVOL3 = SIAR ...



            ..... | EVOL4 EVOL5 LREEL1 (FLOT1  'TINI' FLOT2)  |
                  | EVOL4               FLOT1 ('TINI' FLOT2)  | .....



                         .....  ('ACCE' 'VITE' 'DEPL'             )
                                ('NCOU'  ENTI1                    )
                                ('NPOI'  ENTI2                    )
                                ('NSIN'  ENTI3                    )
                                ('INIT'  ENTI4                    )



    Description :
    -------------

    The SIAR operator generates a set of ENTI1 non stationary 
    signals (in acceleration and/or velocity and/or displacement
    according to the syntax) corresponding to the stationary
    power spectrum EVOL4 (including one curve) and to N modulation
    functions EVOL5 (including N curves) associated with the
    wavebands extracted from LREEL1 [the waveband of the i-th 
    function EVOL5 is given by the i-th (low frequency) and the
    i+1-th (high frequency) element of LREEL1]. If EVOL5 and LREEL1
    are not given, the modulation equals 1 on the frequency range of
    EVOL4.
    

    Options :
    ---------

    - By default 3 series of signals are generated, in acceleration 
      (EVOL1 includes ENTI1 curves), in velocity (EVOL2: idem EVOL1)
      and in displacement (EVOL3: idem EVOL1). Only one series of
      signals can be generated when using the key words 'ACCE'(leration),
      'VITE'(sse) (velocity) and 'DEPL'(acement) (displacement).
      
    - By default a single signal out of a series EVOL1 and/or
      EVOL2 and/or EVOL3 id generated. The 'NCOU' option enables a
      greater number ENTI1 to be input.

    - If EVOL5 and LREEL1 are given, the signals are generated
      on the time interval defined by the abscissas in EVOL5.
      A shorter interval can be defined by inputting the values
      FLOT1 and/or FLOT2, (FLOT2, after the 'TINI' key word).

    - If EVOL5 and LREEL1 are not given, the signals are generated
      from 0. to FLOT1. The initial time step may be changed
      using the 'TINI' option.

    - The signal is generated on a grid of equidistant signals. By
      default, the number of points corresponds to a basic interval
      of 0.02s.  This number may also be specified by the 'NPOI'
      option followed by ENTI2.

    - The signal is generated from a frequency recomposition.
      The number of frequencies may be specified by ENTI3, using
      the 'NSIN' option. ENTI3 corresponds, by default, to wavebands
      of 0.1 Hz.

    - The recomposition requires a random phase draw. The 'INIT' 
      option enables the user to initialize the generator by 
      inputting ENTI4 (integer type object).