code: def getTime(self):
          
          T = 1/float(self.samp[self.nrates-1])
          endtime = self.endsamp[self.nrates-1] * T
  
          t = numpy.linspace(0,endtime,self.endsamp[self.nrates-1])
  
          return t
docs: Actually, this function creates a time stamp vector 
          based on the number of samples and sample rate.