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MP3 is a popular digital audio coding format. It uses lossy compression to decrease file size, which makes it useful for bandwidth-limited operations such as streaming and file sharing. MP3 has the file extension ".mp3", which originally stood for "MPEG-1 Audio Layer III" or "MPEG-2 Audio Layer III".

6 votes
2 answers
162 views

In what ways does mp4 improve on mp3?

How much of mp3 is still used? Was mp4 completely designed from the ground up, or does it improve on the mp3 format? Are there any other improvements or differences over mp3? …
Gordon Gustafson's user avatar
9 votes
2 answers
2k views

How do mp3 encoders compress audio?

I know they remove certain sounds, like extreme highs and lows, but how does this really work? What information is decided to be thrown out? Is it just done by frequency and typical human hearing ra …
Gordon Gustafson's user avatar