Acoustic airborne metamaterials enable unique sound manipulation effects, including acoustic asymmetric transmission (AAT), by leveraging precisely engineered structures. In this study, we numerically design and experimentally validate four AAT systems based on acoustic metamaterials. First, an ultrathin metasurface-based AAT tunnel/window achieves broadband AAT (fractional bandwidth 0.36) via asymmetric reflections and an acoustic blind region. Second, a robust AAT tunnel with triangle cavities exploits asymmetric scattering, maintaining functionality under cylindrical wave excitation. Third, a multi-channel AAT lens, composed of mode-converting meta-atoms, exhibits a 0.37 fractional bandwidth and reversible AAT under first-order wave incidence. Finally, an AAT prism with phased unit cells achieves a 0.26 fractional bandwidth due to asymmetric phase delays from non-parallel exit interfaces, with reversibility via meta-atom tuning. These AAT systems—spanning broadband, robust, multi-channel, and reconfigurable designs—demonstrate significant potential for applications in architectural acoustics, noise control, and acoustic devices, offering tailored solutions for scenarios requiring selective sound transmission, such as medical and engineering environments.