A sound reinforcement system is designed and engineered to make capture and amplify sound and deliver it to an audience. The clear role it has is to distribute sound evenly to the areas where the listeners are, while ensuring that sound is not directed to non-listener areas such as the walls and ceiling. It is also used to transmit the sound to a remote location through an audio or video conference or streaming or record it for later distribution.
When it comes to a live performance, certain instruments can be heard without sound reinforcement, like a cello or organ. However, the soft notes of an acoustic guitar may need to be amplified so that the audience can hear it clearly. This is where a sound reinforcement system comes in.