The objective of this project is to design and test a multi-stable metamaterial system for sound control. The design process involves using COMSOL, MATLAB and SOLIDWORKS to optimize the unit cell design. Magnets are used in the design’s structure to achieve multi-stability. Uni-directional gear system is used to reduce error while keeping one-way transition between states. Numerical result is validated through experiment. Stepper motors are integrated in 1D metamaterial system.