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Definition of "Loudspeaker" |
See speaker. An item designed to convert audio frequency electrical energy into acoustic energy which it projects over a distance. / A loudspeaker or speaker, or in the early days of radio loud-speaker is an electroacoustic transducer that produces sound in response to an electrical audio signal input. In other words, speakers convert electrical signals into audible signals. Non-electrical loudspeakers were developed as accessories to telephone systems, but electronic amplification by vacuum tube made loudspeakers more generally useful. / Satellite Digital Audio Radio service is a broadcasting network in which digital high-fidelity audio entertainment is transmitted from orbiting satellite s to receivers on the surface. |
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