acoustic device

Noun
  1. A device for amplifying or transmitting sound (synset 102679115)
    is a type of: device - an instrumentality invented for a particular purpose
    subtypes:
    • bell - a hollow device made of metal that makes a ringing sound when struck
    • birdcall - a device for imitating a birdcall
    • ear trumpet, hearing aid - a conical acoustic device formerly used to direct sound to the ear of a hearing-impaired person
    • megaphone - a cone-shaped acoustic device held to the mouth to intensify and direct the human voice
    • mouthpiece - an acoustic device; the part of a telephone into which a person speaks
    • mute - a device used to soften the tone of a musical instrument
    • muffler, silencer - a tubular acoustic device inserted in the exhaust system that is designed to reduce noise
    • siren - an acoustic device producing a loud often wailing sound as a signal or warning
    • slapstick - acoustic device consisting of two paddles hinged together; used by an actor to make a loud noise without inflicting injury when striking someone
    • speaking trumpet - a trumpet-shaped acoustic device to intensify and direct the human voice; formerly held to the ear by a hard-of-hearing person
    • whistle - acoustic device that forces air or steam against an edge or into a cavity and so produces a loud shrill sound

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