File Extension
|
Creation Company
|
Description
|
.3gp
|
|
Multimedia container format can contain proprietary formats as
AMR
,
AMR-WB
or
AMR-WB+
, but also some open formats
|
.aa
|
Audible.com
(
???????.????
)
|
A low-bitrate
audiobook
container format with
DRM
, containing audio encoded as either
?????3
or the
ACELP
speech codec.
|
.aac
|
|
The Advanced Audio Coding format is based on the
MPEG-2
and
MPEG-4
standards. AAC files are usually
ADTS
or
ADIF
containers.
|
.aax
|
Audible.com
(
???????.????
)
|
An
Audiobook
format, which is a variable-bitrate (allowing high quality)
M4B
file encrypted with
DRM
. MPB contains
AAC
or
ALAC
encoded audio in an
MPEG-4
container. (More details below.)
|
.act
|
|
ACT is a lossy ADPCM 8 kbit/s compressed audio format recorded by most Chinese MP3 and MP4 players with a recording function, and voice recorders
|
.aiff
|
Apple
|
A standard audio file format used by Apple. It could be considered the Apple equivalent of
wav
.
|
.amr
|
|
AMR-NB audio, used primarily for speech.
|
.ape
|
Matthew T. Ashland
|
Monkey's Audio lossless audio compression format.
|
.au
|
??? ???????????????
|
The standard audio file format used by
Sun
,
????????
and
Java
. The audio in au files can be
PCM
or compressed with the
μ-law
,
a-law
or
G729
codecs.
|
.awb
|
|
AMR-WB audio, used primarily for speech, same as the
ITU-T
's G.722.2 specification.
|
.dct
|
NCH Software
|
A variable codec format designed for dictation. It has dictation header information and can be encrypted (as may be required by medical confidentiality laws). A proprietary format of NCH Software.
|
.dss
|
Olympus
|
DSS files are an
Olympus
proprietary format. It is a fairly old and poor codec. GSM or MP3 are generally preferred where the recorder allows. It allows additional data to be held in the file header.
|
.dvf
|
????
|
A Sony proprietary format for compressed voice files; commonly used by Sony dictation recorders.
|
.flac
|
|
A file format for the Free Lossless Audio Codec, a lossless compression codec.
|
.gsm
|
|
Designed for telephony use in Europe, gsm is a very practical format for telephone quality voice. It makes a good compromise between file size and quality. Note that wav files can also be encoded with the gsm codec.
|
.iklax
|
iKlax
|
An iKlax Media proprietary format, the iKlax format is a multi-track digital audio format allowing various actions on musical data, for instance on mixing and volumes arrangements.
|
.ivs
|
3D Solar UK Ltd
|
A proprietary version with
??????? ???????? ?????????????
developed by 3D Solar UK Ltd for use in music downloaded from their Tronme Music Store and interactive music and video player.
|
.m4a
|
|
An audio-only MPEG-4 file, used by Apple for unprotected music downloaded from their
?-????????
Music Store. Audio within the m4a file is typically encoded with AAC, although lossless ALAC may also be used.
|
.m4b
|
|
An
Audiobook
/
???????
extension with
AAC
or
ALAC
encoded audio in an
MPEG-4
container. Both M4A and M4B formats can contain metadata including chapter markers, images, and hyperlinks, but M4B allows "bookmarks" (remembering the last listening spot), whereas M4A does not.
[6]
|
.m4p
|
Apple
|
A version of AAC with proprietary
??????? ???????? ?????????????
developed by Apple for use in music downloaded from their
?-????????
Music Store.
|
.mmf
|
Yamaha
,
???????
|
A Samsung audio format that is used in ringtones. Developed by Yamaha (SMAF stands for "Synthetic music Mobile Application Format", and is a multimedia data format invented by the Yamaha Corporation, .mmf file format).
|
.mp3
|
|
MPEG Layer III Audio. It is the most common sound file format used today.
|
.mpc
|
|
Musepack or MPC (formerly known as MPEGplus, MPEG+ or MP+) is an open source lossy audio codec, specifically optimized for
transparent
compression of stereo audio at bitrates of 160–180 kbit/s.
|
.msv
|
????
|
A Sony proprietary format for Memory Stick compressed voice files.
|
.ogg, .oga, .mogg
|
Xiph.Org Foundation
|
A free, open source container format supporting a variety of formats, the most popular of which is the audio format Vorbis. Vorbis offers compression similar to MP3 but is less popular. Mogg, the "Multi-Track-Single-Logical-Stream Ogg-Vorbis", is the multi-channel or multi-track Ogg file format.
|
.opus
|
???? ????????? ?????????
|
A lossy audio compression format developed by the Internet Engineering Task Force (IETF) and made especially suitable for interactive real-time applications over the Internet. As an open format standardised through
RFC 6716
, a reference implementation is provided under the 3-clause BSD license.
|
.ra, .rm
|
RealNetworks
|
A
RealAudio
format designed for streaming audio over the Internet. The
.ra
format allows files to be stored in a self-contained fashion on a computer, with all of the audio data contained inside the file itself.
|
.raw
|
|
A raw file can contain audio in any format but is usually used with PCM audio data. It is rarely used except for technical tests.
|
.sln
|
|
Signed Linear PCM format used by
Asterisk
. Prior to v.10 the standard formats were 16-bit Signed Linear PCM sampled at 8 kHz and at 16 kHz. With v.10 many more sampling rates were added.
[7]
|
.tta
|
|
The True Audio, real-time lossless audio codec.
|
.vox
|
|
The vox format most commonly uses the Dialogic
ADPCM
(Adaptive Differential Pulse Code Modulation) codec. Similar to other ADPCM formats, it compresses to 4-bits. Vox format files are similar to wave files except that the vox files contain no information about the file itself so the codec sample rate and number of channels must first be specified in order to play a vox file.
|
.wav
|
|
Standard audio file container format used mainly in
Windows
PCs. Commonly used for storing uncompressed (
PCM
), CD-quality sound files, which means that they can be large in size?around 10 MB per minute. Wave files can also contain data encoded with a variety of (lossy) codecs to reduce the file size (for example the GSM or MP3 formats). Wav files use a
RIFF
structure.
|
.wma
|
????????????
|
Windows Media Audio format, created by Microsoft. Designed with
??????? ???????? ?????????????
(DRM) abilities for copy protection.
|
.wv
|
|
Format for wavpack file
http://www.wavpack.com/flash/wavpack.htm
|
.webm
|
|
Royalty-free
format created for
HTML5 video
.
|
.8svx
|
Electronic Arts
|
The IFF-8SVX format for 8-bit sound samples, created by Electronic Arts in 1984 at the birth of the Amiga.
|