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Telephone Receivers and Loudspeakers

A telephone receiver is defined1 as "a device whereby electric waves produce substantially equivalent sound waves." A loudspeaker is defined1 as "a telephone receiver designed to effectively radiate acoustic power for reception at a distance."

Any electroacoustic transducer consists of an electric portion and an acoustic portion, although in some instances these two portions may be common. For instance, in some crystal microphones the sound waves strike the crystal (acoustic portion) and the crystal (electric portion) generates electric signals. Somewhat similarly, the received electric signals cause the iron diaphragm (electric portion) of the common telephone receiver to move back and forth, and this iron diaphragm (acoustic portion) thereby radiates sound waves.

The electric portion is the motor element, defined1 as "that portion of a telephone receiver which receives power from the electric system and converts it into mechanical power." The acoustic portion is the acoustic radiator, defined1 as "that portion of an electroacoustic transducer which initiates the radiation of sound vibrations." A telephone receiver or loudspeaker is a reciprocating electric motor loaded with an acoustic radiating system.


Home Electroacoustic Devices Telephone Receivers and Loudspeakers

Last Update: 2011-05-30