noun (n)

• the audible part of a transmitted signal(noun.communication)

  Example:
  They always raise the audio for commercials.
  

  Synonym:
  sound
  

  source: wordnet30
• an audible acoustic wave frequency(noun.attribute)

  Synonym:
  audio frequency
  

  source: wordnet30
• a recording of acoustic signals(noun.artifact)

  Synonym:
  audio recording, sound recording
  

  source: wordnet30
• the sound elements of television(noun.artifact)

  source: wordnet30