What happens when a sound hits the barrier?

When a sound wave encounters a barrier, it can be reflected, absorbed, or transmitted, depending on the properties of the barrier. Reflection occurs when the sound wave bounces back, while absorption happens when the barrier material takes in the sound energy, reducing its intensity. Transmission occurs when some sound energy passes through the barrier, although it may be diminished in strength. The specific outcome depends on factors like the material, thickness, and surface texture of the barrier.