text: """ from https://github.com/keithito/tacotron """
  
  '''
  Defines the set of symbols used in text input to the model.
  
  The default is a set of ASCII characters that works well for English or text that has been run through Unidecode. For other data, you can modify _characters. See TRAINING_DATA.md for details. '''
  from tacotron2.text import cmudict
  from tacotron2.text.korean import ALL_SYMBOLS_1
  
  _pad        = '_'
  _punctuation = '!\'(),.:;? '
  _special = '-'
  _letters = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'
  
  # Prepend "@" to ARPAbet symbols to ensure uniqueness (some are the same as uppercase letters):
  _arpabet = ['@' + s for s in cmudict.valid_symbols]
  
  # Export all symbols:
  symbols = ALL_SYMBOLS_1
  kor_symbols = ALL_SYMBOLS_1