For residentials, there are 3 different type of audio solution; Stereo sound system where the listener can enjoy the music within a coverage from the position of the L/R speaker focusing on the quality and clarity of the music.  Distributed sound system where multiple speaker installed within the house to have seamless music playing from bedroom to even backyard sometimes, Surround sound system- speakers are accurately positioned to enrich the fidelity and depth of sound reproduction by using multiple audio channels from the speakers that surround the listener.