Abstract
This paper discusses loudspeaker characteristics which must be published by the manufacturer in order for the acoustical engineer to intelligently design a given loudspeaker system as part of the room acoustics design. It considers those characteristics of cone-type direct radiator loudspeakers, column loudspeakers, and horn-loaded loudspeakers most important to typical distributed and central loudspeaker systems. Reasons are given for preferring continuous pure-tone measurements to measurements using bands of noise, square waves, etc., and for preferring anechoic or “free-field” measurements to so-called “typical-room” measurements. Errors in sound-system design that can result from a lack of information or from misinformation are discussed.
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