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Acoustics: Sound Fields, Transducers and Vibration, 2nd Edition by Tim Mellow, Leo Beranek

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13.10. Radiation from a rigid circular piston in a finite circular open baffle [26,27]

A disk in a circular baffle is a useful model for an open-baffle type loudspeaker and in the limiting case a loudspeaker without a baffle of any sort. Loudspeaker drive units are often measured in a finite baffle such as the rectangular IEC 268-5 baffle. See IEC 60268-5, ed. 3.1, “Sound system equipment - Part 5: Loudspeakers,” available from http://webstore.iec.ch/. For example, for a nominal 8-in (200   mm) diameter loudspeaker, the baffle size would be 1.65   m long by 1.35   m wide, with the loudspeaker offset from the center by 22.5   cm lengthways and 15   cm widthways. If we have a rigorous model of the baffle, we can subtract its diffraction effects ...

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