What is an AAC file?

AAC stands for Advanced Audio Coding, it is a a lossy compression standard for digital audio

It is similar to an MP3 file but usually has better sound quality at the same bit rate. It is the default audio format for Apple devices, such as iPhones and iPads, and is also supported by many other devices and platforms. You can open an AAC file with various media players, such as iTunes, VLC, or Windows Media Player.

AAC files can have different extensions, such as .aac, .m4a, .m4b, or .m4r, depending on the container format and the content.