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A Preliminary SPICE Model to Calculate the Radiation Impedance of a Baffled Circular Piston
Acoustic systems often use circular pistons to radiate sound into ﬂuid media. Mathematically, the solution to the radiation impedance of a baﬄed circular piston is well known. Implementing the exact solution in circuit analysis packages, such as SPICE, however, can be diﬃcult because many commercial packages do not include Bessel and Struve functions. A SPICE subcircuit is presented that calculates the radiation impedance for all frequencies to a good approximation.
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