Advanced Audio Coding
AAC is the acronym for Advanced Audio Coding.
A lossy digital audio compression format designed to provide better sound quality and more efficient compression than its predecessor, the MP3 format. AAC was developed by a group of companies, including Apple, Dolby, Fraunhofer IIS, Nokia, and Sony, as part of the MPEG-2 and MPEG-4 audio standards.
AAC is known for delivering higher audio quality at the same bit rate as MP3, or comparable audio quality at lower bit rates. This makes AAC a more efficient audio format, resulting in smaller file sizes and reduced bandwidth requirements for streaming audio services without sacrificing audio quality.
AAC has been widely adopted by various platforms and devices, including Apple’s iTunes and iOS devices, Android smartphones, digital radio broadcasting (such as DAB+ and Digital Radio Mondiale), and internet streaming services like Spotify and YouTube. In addition to its standard format, AAC also has several extensions, such as HE-AAC and LC-AAC, which provide further improvements in audio quality and compression efficiency.
- Abbreviation: AAC