• 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 speaker, may be composed of any of various materials, including paper, fiber, plastic, silk, metal, or it may be a piezoelectric crystal. A speaker may incorporate multiple specialized drivers, including sub-woofers, woofers, midranges, tweeters, and supertweeters, to better address various frequency ranges. Speakers provide sound for devices such as TVs, audio systems, computers, DVDs, telephones, and so on. Also called loudspeaker, or driver (4).

Information & Library Science

  • noun somebody who makes a speech.


  • noun
    (written as Speaker)
    somebody who presides over a meeting of a parliament


  • noun
    (written as Speaker)
    a person who acts as chairman of a meeting of a parliament