The procedure of electrically or digitally combining together various sound sources at a live event by an audio engineer using a mixing console is known as live sound mixing. Live sound can be thought of as a three-legged stool with one leg as the needs of the audience, second as a needs of a musician and third as the demands of the room. Projecting a louder sound to the audience is the goal and the sound systems must perform three basic tasks: pick up the original individual sounds usually using microphones, mix these sound sources and amplify them and play the mix through speakers for the audience(Trubitt, 1997).
Picking up the original sounds:
The basic task of any sound system is picking up the original sounds. If the purpose is to make the existent sound louder, the initial step is to capture the original sound and the most common tool to capture sound is the microphone. The microphone converts the sound into an electrical signal.
Mixing and amplifying sounds:
A sound system must accommodate more than one sound source, for a solo guitarist/singer, it is necessary to blend two sounds: vocals and the instrument. So the combination of these individual sounds is done by a mixer or a mixing board. Amplifying sound and delivering it pleasantly to the audience is the fundamental purpose known as sound reinforcements(Stark, 2005).
Turning the mix back into sound:
The last task of the sound system is to turn the electrical signal back into sound that the audience perceives. This job is done by the loudspeakers.
Stark, S. (2005). Live sound reinforcement, bestseller edition. Boston: Thomson Course Technology.
Trubitt, R. (1997). Live sound for musicians. Milwaukee, WI: Hal Leonard.