AAC vs MP3

AAC is a standardized, lossy compression and encoding scheme for digital audio. Designed to be the successor of the MP3 format, AAC generally achieves better sound quality than MP3 at similar bit rates.

MP3 is an audio encoding format for MPEG-1 Audio Layer 3. It is one of the most popular audio compression and decompression format today because of its ability to put music into manageable files, thus making downloading over the internet easy.

Summary:
1: Both AAC and MP3 handle Audio only.
2: File extension of AAC are .m4a, .m4b, .m4p, .m4r, .3gp, .mp4, .aac, but MP3 only have the extension .mp3.
3: Virtually all music player supports MP3 files, iPod and iPhone play AAC files, but not all music player support AAC files.
4: AAC is extend form part7 of MPEG-2 standard, and Subpart 4 in Part 3 of the MPEG-4 Standard, but MP3 is extended from MP2.
5: AAC offers better quality than MP3 at the same bitrate, even though AAC also uses lossy compression. MP3 offers lower quality than AAC at the same bitrate.

Other Comparison: MP4 vs MP3 / MP4 vs SWF / MP3 vs WMA / AAC vs AC3 / AIFF vs WAV / MOD vs TOD / MTS vs M2TS / GIF vs PNG

Related Post of AAC File formats

Related Post of MP3 File formats