#electro-acoustic_transducer  a transducer that converts electrical to acoustic energy or vice versa
  supertype:  #transducer  an electrical device that converts one form of energy into another
  subtype:  #cartridge.electro-acoustic_transducer  #earphone  #loudspeaker_system  #microphone
  part:  #diaphragm  electro-acoustic transducer that vibrates to receive or produce sound waves

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