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Measurement of Small-Size Loudspeaker Units by New Acoustical Loads

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This paper describes a new measuring method for small size loudspeakers by using a tube load. The acoustical loads defined in IEC standards for loudspeaker measurement, both of closed boxes and a baffle, are too larger in size than the practical acoustical loads for small loudspeakers, for example, mobile telephone bodies. This paper proposes a tube load for measurement, and examines practical methods without any effect by tube resonance.

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