This document provides an overview of audio devices, formats, and codecs. It defines audio devices as elements that can connect to other devices to play sounds, such as microphones, speakers, sound cards, and headphones. Codecs are described as software or hardware that can transform audio files or streams into different formats for playback or manipulation. Finally, sound formats are file types used to store digital audio on computers, such as WAV, MP3, VOX, and RAW files, which can be uncompressed or compressed.