Question

As we know that matter can be converted to energy and energy to mass(E = MC^2), can we convert sound energy to mass?

Answer 1

It is true that mass can be converted into energy but the conversion of energy into mass hasn’t been achieved experimentally yet.
The branch of particle physics, which deals with the production of matter from the interaction of photons, is known as two photon physics or gamma-gamma physics. If the energy in the center of mass of the interacting photons is large enough, matter can be created.