(1) Sound waves that have been sampled, digitized and stored in the computer. Common formats are music CDs, MP3, WAV and AIFF, and software-based players play the largest variety of audio formats (see
media player).
Musical Instrument Digital Interface (MIDI)
Although digital, the MIDI format differs from all other digital audio formats. MIDI files contain a coded version of the musical score, not the actual sound (see
MIDI). Contrast with
analog audio. See
CD-DA,
MP3,
codec examples and
S/PDIF.
(2) Broadcast radio in digital format. See
HD Radio,
DAB and
satellite radio.
(3) See
digital CD audio.