
A chiptune, or chip music, is music written in sound formats where all the sounds are synthesized in realtime by a computer or video game console sound chip, instead of using sample-based synthesis. The "golden age" of chiptunes was the mid 1980s to early 1990s, when such sound chips were the most common method for creating music on computers. Chiptunes are closely related to video game music, which often featured chiptunes out of necessity. The term has also been recently applied to more recent compositions that attempt to recreate the chiptune sound for purely aesthetic reasons, albeit with more complex technology.
For the above reasons the classic chiptune 8-bit sound can be recognised from its synthesised square or pulse wave instruments, simple white noise percussion and heavy use of ultra-fast arpeggios to emulate chords of three or four notes on a single channel (due to hardware limitations, several notes must be placed on the same channel).