WAV (or WAVE - Waveform Audio File Format) is a digital audio format that is a media container. It was developed by Microsoft and IBM in 1991. It is the main audio format used in the Windows operating system, although it can be played on any platform - WAV support is present in most music players. Also, this file was widely used for recording Audio-CDs.
Technically, a WAV container can contain both compressed and uncompressed audio. However, its application is most common for storing music without loss of quality. As a consequence, the size of such files can significantly exceed other popular audio formats. Due to the large file sizes, files with the .wav extension are not very popular for sharing music on the Internet, unless it is necessary to transfer the file in its original form (lossless).
Files with the .wav extension can be played on a computer and other devices. Most music playback software supports this format. And despite the fact that there are more popular formats, WAV is still a good alternative for certain tasks.