This group is they body that standardized the compression format. You may have even used the MPEG compression format and not even known it, as it is the format used in DVD movies. Actually the audio on a DVD is layer-2 audio but that is not important. How It Works Compression M P3 is a compression algorithm for digital audio files.
Data compression is the act of taking a given file and making it smaller.
This can be done in many ways but most commonly it is done by removing pieces of data which are repeated in a file. A compression algorithm is instruction for removing the information that is repeated and creating a key for how to get that information back. That is the other half of the algorithm which is sometimes called the key. Thus resorting your file. After encoding it would become 3 bytes.