2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/231004Base on the concept of complementary media, a scheme to achieve cloak an object outside the shell is proposed by Yun lai et al [PRL 102, 093901].We generalize the concept in acoustic waves and demonstrate numerically how to achieve the acoustic cloaking and imaging with complementary media.3 pages, 4 figuresOpticsClassical Physicstext