Audio compression is a process that reduces the size of audio files without significantly affecting their quality. This is achieved by removing unnecessary data or using algorithms to encode the sound more efficiently. Common formats for compressed audio include MP3, AAC, and OGG. The main goal of audio compression is to save storage space and make it easier to transmit audio over the internet. Compressed files load faster and use less bandwidth, making them ideal for streaming services and portable devices. However, excessive compression can lead to a loss of sound quality, known as audio artifacts.