

Multitracking became possible in the mid-1950s when the idea of simultaneously recording different audio channels to separate discrete "tracks" on the same reel-to-reel tape was developed. Multitrack recording ( MTR), also known as multitracking, is a method of sound recording developed in 1955 that allows for the separate recording of multiple sound sources or of sound sources recorded at different times to create a cohesive whole. Digital audio quality is measured in data resolution per channel. Digital audio interface for the Pro Tools computer-based hard disk multitrack recording system.
