You create a 20-foot-radius Sphere of Enchantment up to 50ft away, it mutes any sound inside of the zone from the outside of it, The energy is visible and anyone inside the sphere can hear normally, However, any creature outside of the Sphere cannot see the sphere, nor hear anything that happens or occurs inside the sphere. the Sphere does not muffle Physical items and objects, if a small rock is thrown outside of the sphere, it will hit the ground outside the Sphere and likely make a small amount of noise.