An audio file format is a file format for storing audio data on a computer system. There are many file formats for storing audio files.
Lossless compression of sound is not nearly as widely used outside of professional applications, as lossy compression can provide a much greater data compression ratio, with nearly the same apparent quality.
There are many uncompressed data formats, most popular of them being WAV, which is a flexible file format designed to store multiple types of audio data. It is a good file format for storing and archiving the original recording. A similar approach can be found in the AIFF format.