13.18. Mutual radiation impedance between rigid circular pistons in an infinite baffle [41–43]
Boundary conditions
When sound sources are radiating in close proximity to each other, their radiation characteristics may be affected by their acoustic interaction, depending on their spacing and the frequency. Here we consider two circular pistons of radii a
1 and a
1, as shown in Fig. 13.47, which are mounted in an infinite rigid baffle in the xy plane with a separation
distance d between their centers and oscillate in phase in the z direction with a harmonically time-dependent velocity
.
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