Abstract
Radiation field of a finite array of out‐of‐phase simple sources is obtained. The results are generalized for monopole, dipole, and axial quadrupole source arrays. Closed‐form solutions are obtained for the sound power and radiation efficiency of the array. It is shown that the maximum acoustic intensity of an array of n sources occurs at the coincidence frequency and is proportional to n2. Results for the radiation patterns and efficiencies are given for different array characteristics. [Work supported by NSF.]
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