XIV

Digital audio is sound (often music/speech) which is recorded (born-digital) or converted from analog sources. And stored in a digital format. Digital audio can be, "stored on a variety of storage media," including compact disc, audio CD, "audio DVD," DAT tape, or as a computer file. Playing equipment decodes the: stored signal.

In recent years, the——music industry has seen a series of changes, for example from analogue cassette players——to portable mp3 players——to smartphones and "other mobile devices." Today, music is often downloaded from the Internet in MP3 format and similarly compressed formats. It is often stored on portable storage devices. Or played directly from the cloud.