Audio

Audio most commonly refers to sound, as it is transmitted in signal form. It may also refer to:

Sound

 * Audio signal, an electrical representation of sound
 * Audio frequency, a frequency in the audio spectrum
 * Digital audio, representation of sound in a form processed and/or stored by computers or digital electronics
 * Audio, audible content (media) in audio production and publishing
 * Semantic audio, extraction of symbols or meaning from audio
 * Stereophonic audio, method of sound reproduction that creates an illusion of multi-directional audible perspective
 * Audio equipment

Entertainment

 * AUDIO (group), an American R&amp;B band of 5 brothers formerly known as TNT Boyz and as B5
 * Audio (album), an album by the Blue Man Group
 * Audio (magazine), a magazine published from 1947 to 2000
 * Audio (musician), British drum and bass artist
 * "Audio" (song), a song by LSD

Computing

 * HTML audio, identified by the tag