- The output of a source of audio frequencies, such as an amplifier or oscillator. For instance, the audio power an amplifier delivers to a speaker. Also called audio output (1).
- Any audible output from a device, component, or system. For instance, that produced by a speaker. Also called audio output (2).
- In computers, an audible output, such as a chime when a Web page is loaded, or the simulation a of human voice reading a document on screen. Also called audio output (4).