# File rbSnack/tkSnackUtil.rb, line 555
  def smooth level=5
      fff=clone
      0.upto level do
        ff=FormantTemplate.new
        fff.each_index do |i|          
          ff<< [ (fff[i-1][0]+ fff[i][0])/2.0 , (fff[i-1][1]+ fff[i][1])/2.0 ] if i>0 
        end
        fff=ff
      end
      fff
  end