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| Name | M4R | WAV |
| Full name | M4R - MPEG 4 Ringtones Audio | WAV - Waveform Audio File Format |
| File extension | .m4r | .wav .wave |
| MIME type | audio/aac | audio/vnd.wave, audio/wav, audio/wave, audio/x-wav |
| Developed by | Apple Inc. | Microsoft & IBM |
| Type of format | audio file format, container format | |
| Description | Waveform Audio File Format is a Microsoft and IBM audio file format standard for storing an audio bitstream on PCs. It is the main format used on Windows systems for raw and typically uncompressed audio. The usual bitstream encoding is the linear pulse-code modulation (LPCM) format. | |
| Technical details | Though a WAV file can contain compressed audio, the most common WAV audio format is uncompressed audio in the linear pulse code modulation (LPCM) format. Audio in WAV files can be encoded in a variety of audio coding formats, such as GSM or MP3, to reduce the file size. | |
| Associated programs | Apple QuickTime Player, Apple iTunes | ALLPlayer, VLC media player, Media Player Classic, MPlayer, RealPlayer, Winamp. |
| Wiki | http://en.wikipedia.org/wiki/MPEG-4_Part_14 | https://en.wikipedia.org/wiki/WAV |