Compressed audio refers to the process of reducing the file size of audio recordings while maintaining acceptable sound quality. This is achieved by removing unnecessary data or using algorithms to encode the audio more efficiently. Common formats for compressed audio include MP3, AAC, and OGG. The main advantage of compressed audio is that it allows for easier storage and faster transmission over the internet. Smaller file sizes make it convenient for streaming services and portable devices, enabling users to enjoy music and podcasts without consuming excessive storage space or bandwidth.