AAC's advanced audio coding format has become the actual mode of downloading music on mobile phones.
With the appearance of MP3, the transmission carrier of songs is no longer limited to inherent objects such as cassettes and CDs. An MP3 player the size of a matchbox can store hundreds of popular songs. However, with the innovation of technology, MP3 is also doomed.
nowadays, with the music playing function of smart phones becoming more and more mature, people are used to listening to mobile phones with headphones plugged in. AAC format is more powerful than MP3, and its bit rate is much lower than MP3, which can eliminate programs that are imperceptible to human ears and occupy less memory.