# File rbSnack/tkSnack.rb, line 489
    def dBPowerSpectrum(options=nil, &op_block) 
      options=SnOp::makeOps(options, &op_block)
      res=Snack::exeTkCmd([@name, 'dBPowerSpectrum'],options)
      res=res.split
      res.collect!{|x| x.to_f}
    end