acoustic device

Definitions of acoustic device

1. noun

   a device for amplifying or transmitting sound
   types:

   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

   boat whistle

   a whistle on a boat that is sounded as a warning

   church bell

   a bell in a church tower (usually sounded to summon people to church)

   cowbell

   a bell hung around the neck of cow so that the cow can be easily located

   death bell, death knell

   a bell rung to announce a death

   dinner bell

   a bell rung to announce that dinner has been served

   electric bell

   a bell activated by the magnetic effect of an electric current

   factory whistle

   a whistle at a factory that is sounded to announce times for starting or stopping work

   fire bell

   a bell rung to give a fire alarm

   school bell

   a bell rung to announce beginning or ending of class

   sheep bell

   a bell hung round the neck of a sheep so that the sheep can be easily located

   shop bell

   a bell attached to the door of a small shop; warns the proprietor that a customer has entered the shop

   cascabel, sleigh bell

   a bell attached to a sleigh, or to the harness of a horse that is pulling a sleigh

   sordino, sourdine

   a mute for a violin

   steam whistle

   a whistle in which the sound is produced by steam; usually attached to a steam boiler

   tocsin, warning bell

   a bell used to sound an alarm

   type of:

   device

   an instrumentality invented for a particular purpose