- noun an expansion card which produces analog sound signals under the control of a computer
- An expansion board that enables computers to handle sounds. Audio cards serve to record, playback, and synthesize sounds. They generally provide external jacks for a microphone, a line-in, speakers or headphones, and a MIDI port. Also called sound board, sound adapter, audio adapter, audio card, or audio board.
- synonymsound adapter
- synonymsound board