code: def window_design(self, window_length, beta):
          
  
          self.window = np.kaiser(window_length, beta)
  
          return self.window
docs: Kaiser window design
  
          Args:
              window_length: Length of the window in number of samples
              beta: Beta value for Kaiser window design
  
          Returns:
              window: Window designed using the beta and length provided as inputs