Communication / Electroacoustics
The part of a COMMUNICATIONs system in which electrical waves are converted into perceptible SIGNALs. In particular it refers to any electromechanical TRANSDUCER which converts electrical energy into sound waves, the most common of which are radio and television sets.
See: CHANNEL, DEMODULATION, HETERODYNE, RADIO SPECTRUM, TRANSMISSION. Compare: AMPLIFIER.