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A raw audio file is any file containing un-containerized and uncompressed audio. The data is stored as raw pulse-code modulation (PCM) values without any metadata header information (such as sampling rate , bit depth , endian , or number of channels).
One major uncompressed audio format, LPCM, is the same variety of PCM as used in Compact Disc Digital Audio and is the format most commonly accepted by low level audio APIs and D/A converter hardware. Although LPCM can be stored on a computer as a raw audio format, it is usually stored in a .wav file on Windows or in a .aiff file on macOS.
Linear pulse-code modulation (LPCM, generally only described as PCM) is the format for uncompressed audio in media files and it is also the standard for CD-DA; note that in computers, LPCM is usually stored in container formats such as WAV, AIFF, or AU, or as raw audio format, although not technically necessary.
The 'Music' category is merely a guideline on commercialized uses of a particular format, not a technical assessment of its capabilities. For example, MP3 and AAC dominate the personal audio market in terms of market share, though many other formats are comparably well suited to fill this role from a purely technical standpoint.
Audio content encoded in a particular audio coding format is normally encapsulated within a container format. As such, the user normally doesn't have a raw AAC file, but instead has a .m4a audio file, which is a MPEG-4 Part 14 container containing AAC-encoded audio.
Waveform Audio File Format (WAVE, or WAV due to its filename extension; [3] [6] [7] pronounced / w æ v / or / w eɪ v / [8]) is an audio file format standard for storing an audio bitstream on personal computers. The format was developed and published for the first time in 1991 by IBM and Microsoft.
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AU – Simple audio file format introduced by Sun Microsystems; AUP3 – Audacity's file for when you save a song; BWF – Broadcast Wave Format, an extension of WAVE; CDDA – Compact Disc Digital Audio; DSF, DFF – Direct Stream Digital audio file, also used in Super Audio CD; RAW – Raw samples without any header or sync; WAV – Microsoft ...