General English


  • noun an electromagnetic device that converts electrical signals into audible noise.


  • A transducer which converts electrical energy into sound energy, which is then radiated outward to the surrounding medium. The diaphragm, which is the vibrating membrane of a loudspeaker, may be composed of any of various materials, including paper, fiber, plastic, silk, metal, or it may be a piezoelectric crystal. A loudspeaker may incorporate multiple specialized drivers, including sub-woofers, woofers, midranges, tweeters, and supertweeters, to better address various frequency ranges. Loudspeakers provide sound for devices such as TVs, audio systems, computers, DVDs, telephones, and so on. Also called speaker, or driver (4).

Information & Library Science

  • noun a device that turns electrical signals into recognisable sound

Media Studies

  • noun a device used to convert electrical energy into sound energy, producing the sound in equipment such as televisions, radios, CD players and public-address systems.