Crispino, Luís C. B.Oliveira, Ednilton S.Matsas, George E. A. [UNESP]2022-04-282022-04-282007-11-29Physical Review D - Particles, Fields, Gravitation and Cosmology, v. 76, n. 10, 2007.1550-79981550-2368http://hdl.handle.net/11449/225013We compute numerically the absorption cross section of a canonical acoustic hole for sound waves with arbitrary frequencies. Our outputs are in full agreement with the expected low- and high-frequency limits. © 2007 The American Physical Society.engArtigo10.1103/PhysRevD.76.1075022-s2.0-36748998861