Editing Audio file format (section)

===Lossy compressed audio format===
Lossy audio format enables even greater reductions in file size by removing some of the audio information and simplifying the data. This, of course, results in a reduction in audio quality, but a variety of techniques are used, mainly by exploiting [[psychoacoustics]], to remove the parts of the sound that have the least effect on perceived quality, and to minimize the amount of audible noise added during the process. The popular [[MP3|MP3 format]] is probably the best-known example, but the [[AAC format]] found on the iTunes Music Store is also common. Most formats offer a range of degrees of compression, generally measured in [[bit rate]]. The lower the rate, the smaller the file and the more significant the quality loss.