Though a WAV file can contain compressed audio, the most common WAV audio format is uncompressed in the linear pulse code modulation (LPCM) format. There is no official standard for including metadata in Ogg containers, but it must be included in the Codec. A BSD licensed library called LibVorbis is used to encode and decode the data from the Vorbis streams. The format consists of chunks of data referred to as Ogg Pages. The Ogg format was created as a framework that is available free of charge and re-implementable in software.

The usual bitstream encoding is the linear pulse-code modulation (LPCM) format. It is the main format used on Windows systems for raw and typically uncompressed audio. Waveform Audio File Format is a Microsoft and IBM audio file format standard for storing an audio bitstream on PCs. This is the preferred extension for OGG audio-only files. It's a container format that contains the audio transport stream encoded in the Vorbis format. OGA files are essentially just the audio-only element of an OGG file. Audio/vnd.wave, audio/wav, audio/wave, audio/x-wav

.wav to ogg