class AliPHOSPulseGenerator: public TObject

 Contruct a pulsegenrator object and initializes all necessary parameters
 @param a digit amplitude in GeV
 @param t0 time delay in nanoseconds of signal relative the first sample.
 This value should be between 0 and Ts, where Ts is the sample interval

 Destructor: delete arrays of samples

 Reset all sample amplitudes to 0

 Adds a baseline offset to the signal
 @param baselineLevel The basline level to add

 Adds Gaussian uncorrelated to the sample array
 @param sigma the noise amplitude in entities of ADC levels

Adds correlated Gaussian noise with cutof frequency "cutoff"
 @param sigma noise amplitude in entities of ADC levels
 @param -30DB cutoff frequency of the noise in entities of sampling frequency

 Adds pretrigger samples to the sample arrays and replace them
 with concatinated and truncated arrays

 Emulates ADC: rounds up to nearest integer value all amplitudes

 Shape of the electronics raw reponse:
 It is a semi-gaussian, 2nd order Gamma function of the general form
 v(t) = A *(t/tp)**n * exp(-n * t/tp-n) with
 tp : peaking time  fgTimePeak
 n  : order of the function

 for a start time fTZero and an amplitude fAmplitude given by digit,
 calculates the raw sampled response AliPHOSPulseGenerator::RawResponseFunction

 Return integer sample arrays adcHG and adcLG

 Prints sampled amplitudes to stdout

 Draw graphs with high and low gain samples
 Option_t* opt="all": draw both HG and LG in one canvas
               "HG" : draw HG only
               "LG" : draw LG only

 Raw Read Out