code: def register_pydub_effect(fn, name=None):
      """
      decorator for adding pydub effects to the AudioSegment objects.
      example use:
          @register_pydub_effect
          def normalize(audio_segment):
              ...
      or you can specify a name:
          @register_pydub_effect("normalize")
          def normalize_audio_segment(audio_segment):
              ...
      """
      if isinstance(fn, basestring):
          name = fn
          return lambda fn: register_pydub_effect(fn, name)
  
      if name is None:
          name = fn.__name__
  
      from .audio_segment import AudioSegment
  
      setattr(AudioSegment, name, fn)
      return fn
  
imports: from __future__ import division
  from io import BufferedReader
  import json
  import os
  import re
  import sys
  from subprocess import Popen, PIPE
  from math import log, ceil
  from tempfile import TemporaryFile
  from warnings import warn
  from functools import wraps
label_desc: Use image node_id 7 for calling a global function with example usage: register_pydub_effect(fn, name) and returns: fn, function