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Perbandingan -- audio formats

The following tables compare general and technical information for a variety of audio formats and audio compression formats. For listening tests comparing the perceived audio quality of audio formats and codecs, see the article Codec listening test.

Contents

General information

General Information about Audio Compression Formats - creator/company, license/price etc.
Audio compression formatCreatorFirst public release dateLatest stable versionEncoder costPlayer costProprietary implementations (codecs)Open-source implementations (codecs)Application (besides consumer audio)Music reproduction (consumer audio)Telephony appLossless audio compressionPatentedDRM
AACISO/IEC MPEG Audio Committee1997ISO/IEC 14496-3Non-free[1]Non-free[1]FAAC (encoding only), iTunes, Nero Digital AudioFAAD2 (decoding only), FFmpeg, Android OpenCORE AAC (decoding only)[2]Digital TV service, Internet streamingYesNoNoNon-free YesNon-free FairPlay (.m4p only, discontinued)
AC-3Dolby Laboratories1992ATSC A52:2012Non-freeNon-freeDVD players, digital televisionFFmpeg, liba52 (decoding only), Aften (encoding only), libavc (2.0 channels max)Theatrical movie presentation, Digital TV service & home-video (personal recorders, DVD, etc.)NoNoNoNon-free Yes?
ALACApple Inc.2004-04-28QuickTime 7.6FreeFreeQuickTime, iTunes, RealPlayerMacOSforge, FFmpeg-Music archivalYesYesFreePossible, but never implemented
ALSISO/IEC MPEG Audio Committee2005ISO/IEC 14496-3FreeFreemp4alsFFmpeg (decoding only)--NoYesNon-free Yes?
AMR3GPP1999-06-22ETSI TS 126 071 V9.0.0 (2009)Non-free[3][4]Non-free[3][4]QuickTime, RealPlayerFFmpeg (decoding only), FFmpeg with OpenCORE libraries,[5] Android[6]voice recordingNoYesNoNon-free YesNo
AMR-WB
(G.722.2)		3GPP2001-04-10ETSI TS 126 190 V8.0.0 (2009-01)Non-freeNon-freeQuickTime, RealPlayerFFmpeg (decoding only),[5] FFmpeg with VisualOn libraries, Android (decoding only),[6] opencore-amr for both encoding and decodingvoice recordingNoYesNoNon-free YesNo
AMR-WB+3GPP2004-06-14ETSI TS 126 290 V8.0.0 (2009-01)Non-free[7][8]Non-free[7][8] ? ?voice recordingYesYesNoNon-free YesNo
apt-XAPTX19892007Non-freeNon-freeBroadcast audio codecs: Systembase, APT, AVT, Harris Corporation, MAYAH, Prodys, Qbit; wireless headphones: iSkin, JayBird Gear, DTS discs for movies?Low latency Studio/transmitter link, Bluetooth A2DP stereo, digital wireless microphoneYesYesNoNon-free YesNo
ATRACSony Corp.1991ATRAC3plusNon-freeNon-freeMiniDisc, Walkman, VAIO, Clie, PlayStation 3, PlayStation Portable, SDDS, SonicStage, SoundForge, RealPlayer, ConnectPlayerFFmpeg (decoding only, ATRAC3plus and ATRAC Advanced Lossless are not supported)voice recording, theatrical movie presentation-NoYesNon-free YesNon-free Yes
CELTXiph.Org Foundation, Jean-Marc Valin2007-12-080.11.1FreeFree libcelt, FFmpeg with libcelt library (decoding only)Speech, VoIP, Low latency, Studio/transmitter link, wireless audioYesYesNoNoNo
Codec2David Rowe2010 ?FreeFree c2enc, c2decLow bandwidth HF/VHF digital radio, VoIP trunkingNoYesNoNoNo
Enhanced AC-3Dolby Laboratories?ATSC A52:2012Non-freeNon-freeDigital televisionFFmpegTheatrical movie presentation, digital TV service & home-video (personal recorders, DVD, etc.)NoNoNoNon-free Yes?
FLACXiph.Org Foundation, Josh Coalson2001-07-201.2.1FreeFree FLAC,[9] Flake (encoding only),[10] FFmpeg--YesYesNoNo
G.711ITU-T1972 (ITU-T standard from 1988)G.711 Appendix II (02/00)FreeFreeVarious proprietary VoIP softwareFFmpeg, Ekiga, Asterisk (PBX) and almost any VoIP softwarevoice recordingNoYesNoNoNo
G.722ITU-T1988-11 FreeFreeVarious proprietary VoIP softwareAsterisk (PBX), QuteCom, FFmpegvoice recordingNoYesNoNoNo
G.722.1ITU-T1999-09G.722.1 (05/05)Free[11][12]Free[11][12]Various proprietary VoIP softwareFreeSWITCH,[13] PJSIP, etcvoice recordingNoYesNoNon-free YesNo
G.722.2
(AMR-WB)		ITU-T (adopted directly from 3GPP)2002-01G.722.2 (07/03)Non-freeNon-freeQuickTime, RealPlayerFFmpeg (decoding only),[5] FFmpeg with VisualOn libraries, Android (decoding only)[6]voice recording, audioNoNoNoNon-free YesNo
G.723.1ITU-T1996-03G.723.1 (05/06)Non-freeNon-freeVarious proprietary VoIP softwareFFmpegvoice recordingNoYesNoNon-free YesNo
G.726ITU-T1990-12 FreeFreeVarious proprietary VoIP softwareFFmpeg, Ekiga and other VoIP softwarevoice recordingNoYesNoNoNo
G.728ITU-T1992-09 Non-freeNon-freeVarious proprietary VoIP software voice recordingNoYesNoNon-free YesNo
G.729ITU-T1996-03G.729 (01/07)Non-freeNon-freeVarious proprietary VoIP softwareFFmpeg (decoding only)voice recordingNoYesNoNon-free YesNo
GSM-FRETSI Special Mobile Group1990-1994 (ETS 300 580-2)ETSI EN 300 961 V8.1.1 (2000–11)FreeFree FFmpeg (decoding only), FFmpeg with external library libgsm, Ekiga and other VoIP softwarevoice recordingNoYesNo ?No
iLBCGlobal IP Solutions2002 FreeFreeCisco IP Communicator,[14] old versions of Skype[15]Ekiga, Asterisk (PBX) and other VoIP software, FFmpeg with libilbc libraryvoice recordingNoYesNoNo?[16]No
iSACGlobal IP Solutions ? FreeFreeYahoo! MessengerWebRTCvoice recordingNoYesNoFree[17] ?
Monkey's AudioMatthew T. Ashland2000+4.06FreeFreeMonkey's AudioFFmpeg (decoding only)--NoYes?No
MP3ISO/IEC MPEG Audio Committee1993ISO/IEC 11172-3, ISO/IEC 13818-3Non-free (See notes)Non-free (See notes)FhG, l3enc, MP3enc, (old implementations: Xing TOMPG, SCMPX)LAME (encoding only), FFmpeg (decoding only), libmad (decoding only), (old implementations: BladeEnc)-YesNoNoNon-free Yes
(but see notes)		Non-free Yes (optional, rarely used)
MP2 (MPEG-1, 2 Audio Layer II)ISO/IEC MPEG Audio Committee1993ISO/IEC 11172-3, ISO/IEC 13818-3Non-freeNon-freevarious DVD software, video software, audio softwareTooLAME (encoding only), TwoLAME (encoding only), FFmpegDAB, DVB, DVDYesNoNoFree No[18] ?
MusepackFrank Klemm/MDT19971.30 (2009-04-02)FreeFree Musepack,[19] FFmpeg (decoding only)-YesNoNoMaybe[20]?
Nellymoser AsaoNellymoser Inc.2002 ?Non-freeNon-freeAdobe Flash, Flash PlayerFFmpegvoice recordingNoNoNoNon-free Yes ?
OpusIETF2012-09-11RFC 6716 (libopus 1.0.2)FreeFree libopus, FFmpeg with libopus librarySpeech, VoIP, Low latency, Studio/transmitter link, wireless audioYesYesNoroyalty-free[21]No
ShortenTony Robinson1999-06-021.FreeFreeShortenFFmpeg (decoding only)--NoYesNoNo
SILKSkype Limited2009-01-07 FreeFreeSkype voice recordingNoNoNoNon-free Yes?
Siren 7PictureTel Corp. (now Polycom Inc.)1999 ?[11][12]?[11][12]Microsoft Office CommunicatorFreeSWITCH (libg722_1,[22] aMSN (libsiren - part of libmsn)[23][24]voice recordingNoYesNoNon-free Yes?
SpeexXiph.Org Foundation, Jean-Marc Valin2003-03-241.1.12FreeFreeAdobe Flash Player 10Speex,[25] FFmpeg with libspeex libraryvoice recordingNoYesNoNoNo
SVOPCSkype Limited2007 ??Skype voice recordingNoYesNoNon-free Yes?
TwinVQNippon Telegraph and Telephone1996 (?) Non-freeNon-freeWinamp with VQF plugin, NTT TwinVQ player/encoder, Yamaha SoundVQ player, Nero Media PlayerFFmpeg (decoding only)[26]speechYesNoNoNon-free Yes?
Vorbis (Ogg)Xiph.Org Foundation2000-05-111.3.2FreeFree libvorbis,[27] aoTuV,[28] FFmpeg-YesNoNoNoNo
WavPackConifer Software19984.60.1FreeFree WavPack,[29] FFmpeg (decoding only)--YesYesNoNo
Windows Media AudioMicrosoft199911.0Free Windows Media Encoder[30]Free for licensees of the Windows operating system [31]Windows Media Player, Windows Media EncoderFFmpeg (decoding only for Pro, Lossless and Voice)internet streamingYesNoYesNon-free YesNon-free[32]
Audio compression formatCreatorFirst public release dateLatest stable versionEncoder costPlayer costProprietary implementations (codecs)Open-source implementations (codecs)ApplicationApp: MusicApp: telephonyLossless audio compressionPatentedDRM

Notes

  1. The 'Music' category is merely a guideline on commercialized uses of a particular format, not a technical assessment of its capabilities. (For example, in terms of marketshare, MP3 and AAC dominate the personal audio market, though many other formats are comparably well suited to fill this role from a purely technical standpoint.)
  2. First public release date is first of either specification publishing or source releasing, or in the case of closed-specification, closed-source codecs, is the date of first binary releasing. Many developing codecs have pre-releases consisting of pre-1.0 versions and perhaps 1.0 release candidates (RCs), although 1.0 may not necessarily be the release version.
  3. Latest stable version is that of specification or reference tools.
  4. If there happens to be OSI licensed software available for a particular format, this does not necessarily permit one to use said codec free of charge. Likewise, if there is only proprietary licensed software available for a particular format, one might be able to use the codec free of charge.
  5. MP3 licence and patent status: The MP3 format is patented and therefore subject to license (expires latest: 2017). However with multiple contenders for the patent, it is far from certain in the market who is the patent holder with the right to set pricing and royalties. A sample of prices for one patent-holder is available. In practice, there is a wide range of MP3 authoring software and MP3 encoding worldwide is often performed on a private basis and unpaid, with patent rights unenforced against end-users. See MP3#Licensing and patent issues.

Operating system support

Audio codec OS support
CodecWindowsMac OS XLinuxBSDUnixPalm OSSymbian OSRockbox
AACYesYesYesYesYesYesYesYes
ALACYesYesYesYesYesNoNoYes
apt-XYesYesYesYesYesNoNoNo
CELTYesYesYesYesYesYesNoNo
FLACYesYesYesYesYesYesYesYes
Monkey's AudioYesYesYesYesYesNoNoYes
MP3YesYesYesYesYesYesYesYes
MusepackYesYesYesYesYesYesYesYes
OpusYesYesYesYesYesNoNoYes
RealAudio[33]YesYesYesYesYesYesYesYes
SpeexYesYesYesYesYesYesYesYes
VorbisYesYesYesYesYesYesYesYes
WavPackYesYesYesYesYesYesYesYes
WMA[33]YesYes[34]YesYesYesYesYesYes

Multimedia frameworks support

Multimedia Frameworks Support for Audio Compression Formats
Audio compression formatACMDirectShowQuickTimeGStreamerFFmpeg
8SVXYes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
AACYes (ffdshow)Yes (ffdshow, Monogram[35])YesYes (GStreamer FFmpeg plug-in)Yes
HE-AACYes (ffdshow)Yes (ffdshow, Monogram[35])YesNoYes
AC3Yes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
E-AC-3Yes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
AMRNoNoYes

[36] [37]

Yes (GStreamer Ugly Plug-ins)Yes
Apple LosslessYes (ffdshow)Yes (ffdshow)YesYes (GStreamer FFmpeg plug-in)Yes
Cook CodecYes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
ATRAC3Yes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
ATRAC3plusNoNoNoNoNo
DCA aka DTSYes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
DTS-HDNoNoNoNoNo
FLACYes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer Base Plug-ins, GStreamer FFmpeg plug-in)Yes
Monkey's AudioYes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
WavPackYes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
ShortenYes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
Sonic AudioYes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
MP3Yes (ffdshow)YesYesYes (GStreamer Ugly, GStreamer FFmpeg plug-in)Yes
RealAudioYes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer FFmpeg plug-in, GStreamer DLL loader plugin + Binary Codec Packages)Yes
SpeexYes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStramer Good Plug-ins, GStreamer FFmpeg plug-in)Yes
VorbisYes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer Base Plug-ins, GStreamer FFmpeg plug-in)Yes
LaNoNoNoNoNo
LPACNoNoNoNoNo
Windows Media Audio v1Yes (ffdshow)YesYes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
Windows Media Audio v2Yes (ffdshow)YesYes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
Windows Media Audio ProYes (ffdshow)YesYes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
Windows Media Audio LosslessNoYesYes (flip4mac)Yes (GStreamer FFmpeg plug-in)Yes
Windows Media Audio VoiceNoYesNoNoYes
MusepackYes (ffdshow)Yes (ffdshow, Monogram[35])Yes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
Meridian Lossless PackingYes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
Nellymoser Asao Codec in FlashYes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
OptimFROGNoNoNoNoNo
TruespeechYes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
TTAYes (ffdshow)Yes (ffdshow)Yes (Perian)Yes (GStreamer FFmpeg plug-in)Yes
QCELPYes (ffdshow)Yes (ffdshow)YesYes (GStreamer FFmpeg plug-in)Yes
Audio compression formatACMDirectShowQuickTimeGStreamerFFmpeg

Technical details

Technical Details of Lossy Audio Compression Formats
Audio compression formatAlgorithmSample RateBit rateLatencyCBRVBRStereoMultichannel
AACMDCT, Hybrid Subband (AAC-HE)8 kHz to 192 kHz[38]8 to 529 kbit/s (stereo)20–405ms[39]YesYesYes: Dual, Mid/Side, Intensity, ParametricYes: Up to 48 channels
AC3MDCT32, 44.1, 48 kHz32 to 640 kbit/s40.6 msYesNoYesYes: Up to 6 channels
AMRACELP8 kHz4.75, 5.15, 5.90, 6.70, 7.40, 7.95, 10.20, 12.20 kbit/s25msYesYesNoNo
AMR-WB
(G.722.2)		ACELP16 kHz6.60–23.85 kbit/s
(6.60, 8.85, 12.65, 14.25, 15.85, 18.25, 19.85, 23.05 or 23.85 kbit/s)		25 msYesYesYes: only in MPEG-4 Part 12 containerNo
AMR-WB+ACELP8, 11.025, 16, 22.05, 32, 44.1, 48 kHz6 kbit/s to 36 kbit/s (mono) 7 kbit/s to 48 kbit/s (stereo)60–90 msYesYesYesNo
apt-XSubband24 kHz to 48 kHz (stereo)192 kbit/s to 384 kbit/s (stereo)2 msYes (4:1)NoYesYes: Up to 8 channels
ATRAC1MDCT-Hybrid SubbandVarious292 kbit/s>100 msYesNoYes: Dual OnlyNo
ATRAC3MDCT-Hybrid SubbandVarious132/66 kbit/s>100 msYesNoYes: Dual (LP2), Mid/Side (LP4)No
ATRAC3plusMDCT-Hybrid SubbandVarious48–352 kbit/s>100 msYes ?YesYes: Up to 6 channels
CELTMDCT32 to 96 kHz24 kbit/s[40] to >1 Mbit/s2–14.5 ms (8.9 ms typical)YesNoYesYes
Codec2Speech8 kHz1200 bit/s, 1400 bit/s, 2400 bit/s, 2550 bit/s20–40 msYesNoNoNo
GSM-HRVSELP8 kHz5.6 kbit/s25 msYesNoNoNo
GSM-FRRPE-LTP8 kHz13 kbit/s20–30 msYesNoNoNo
GSM-EFRACELP8 kHz12.2 kbit/s20-30msYesNoNoNo
HVXCSpeech8 kHz2 or 4 kbit/s36 msYesYesNoNo
iLBCBlock Independent LPC8 kHz13.33, 15.20 kbit/s20, 30 msYesNoNoNo
iSACTransform coding16 kHz or 32 kHz10–52 kbit/s33–63 msYesYesNoNo
MP3 (MPEG-1, 2, 2.5 Audio Layer III)MDCT, Hybrid Subband8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48 kHz8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, 192, 224, 256, 320 kbit/s>100 msYesYesYes: Dual, Mid/Side, IntensityNo
MPEG-1 Audio Layer II (MP2)Subband32, 44.1, 48 kHz32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384 kbit/s YesYes: but decoders are not required to support itYes: Dual, IntensityNo
MPEG-2 Audio Layer II (MP2)Subband16, 22.05, 24 kHz[41][42]8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160 kbit/s[41] YesYes: but decoders are not required to support itYesYes: up to 5 full range audio channels and an LFE-channel with MPEG Multichannel
MusepackSubband32, 37.8, 44.1, 48 kHz3 to 1300 kbit/s?NoYesYesYes: Up to 8 channels
OpusHybrid (CELP+MDCT)8 to 48 kHz6 to 510 kbit/s5 to 65.2 msYesYesYesYes: Up to 255 channels[43]
RealAudioMDCT,Varies (see article)Varies (see article)VariesYesYesYesYes: Up to 6 channels
SILKLTP8, 12, 16, 24 kHz6 to 40 kbit/s25 msYes???
Siren 7Derived from PT716plus, MLT16 kHz16, 24, 32 kbit/s40 msYesNoNoNo
Siren 14MLT32 kHz24, 32, 48 kbit/s (mono), 48, 64, 96 kbit/s (stereo)40 msYesNoYesNo
Siren 22MLT48 kHz32, 48, 64 kbit/s (mono), 64, 96, 128 kbit/s (stereo)40 msYesNoYesNo
SpeexCELP8, 16, 32, (48) kHz2.15 to 24.6 kbit/s (NB); 4 to 44.2 kbit/s (WB)30ms (NB) 34ms (WB)YesYesYes: IntensityYes
VMR-WBACELP16 kHz8.55, 4.0, 0.8, 13.3, 6.2, 2.7, 1.033.75 msYesYes??
Vorbis (Ogg)MDCT1 Hz to 200 kHzvariable>100 msYes/ABRYesYes: Dual, Lossless, Phase, Point (Intensity)Yes: Up to 255 channels
WavPack LossyPrediction, Quantization1 Hz to 16.777216 MHz196 kbit/s and up in lossy mode (for CD audio)?YesYesYesYes: Up to 256 channels
Windows Media Audio StandardMDCT8, 11.025, 16, 22.05, 32, 44.1, 48 kHz8–768 kbit/s>100 msYesYesYesNo
Windows Media Audio ProMDCT8, 11.025, 16, 22.05, 32, 44.1, 48, 88.2, 96 kHz4–768 kbit/s>100 msYesYesYesYes: At least 8 channels, expandable
Technical Details of Lossless Audio Compression Formats
Audio compression formatAlgorithmSample RateBits per sampleLatencyStereoMultichannel
ALACLossless1 Hz to 384000 Hz16, 20, 24, 32[44]?YesYes: Up to 8 channels
FLACLossless1 Hz to 655350 Hz8, 16, 20, 24, (32)4.3–92 ms (46.4 ms typical)YesYes: Up to 8 channels
Monkey's AudioLossless8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48 kHz8, 16, 24?YesNo
RealAudio LosslessLosslessVaries (see article)Varies (see article)VariesYesYes: Up to 6 channels
True AudioLossless0–4 GHz1 to > 64?YesYes: Up to 65535 channels
WavPack LosslessLossless, Hybrid1 Hz to 16.777216 MHzVaries in lossless mode; supports 32-bit float input; 2.2 minimum in lossy mode?YesYes: Up to 256 channels
Windows Media Audio LosslessLossless8, 11.025, 16, 22.05, 32, 44.1, 48, 88.2, 96 kHz16, 24>100 msYesYes: Up to 6 channels
Technical Details of ITU-T Audio Compression Formats
Audio compression formatAlgorithmSample RateBit rate[45]Bits per sampleLatencyCBRVBRStereoMultichannel
G.711companding A-law or μ-law, PCM, Lossy8 kHz64 kbit/s8 bit125 µs (typical)YesNoNoNo
G.711.1MDCT, A-law, μ-law, Lossy8 or 16 kHz64, 80, 96 kbit/s16 bit11.875 msYesYesNoNo
G.718CELP, MDCT, Lossy8 or 16 kHz8, 12, 12.65, 16, 24, 32 kbit/s16 bit42.875–43.875 msYesYesNoNo
G.718BCELP, MDCT, Lossy, Sinusoidal Coding32 kHz36, 40, 48 kbit/s16 bit49.625 msYesYesNoNo
G.719Lossy, (incorporates elements of Siren Codec and Ericsson technology)48 kHz32-128 kbit/s
(Rates between 32 and 88 kbit/s shall be a multiple of 4 kbit/s; 88-128 kbit/s - a multiple of 8 kbit/s.)		16 bit40 msYesNoYes: only in MPEG-4 Part 12 containerYes: only in MPEG-4 Part 12 container
G.721ADPCM, Lossy8 kHz32 kbit/s13 bit YesNoNoNo
G.722sub-band ADPCM, Lossy16 kHz64 kbit/s
(comprises 48, 56 or 64 kbit/s audio and 16, 8 or 0 kbit/s auxiliary data)		14 bit4 msYesNoNoNo
G.722.1Modulated Lapped Transform, (based on Siren Codec), Lossy16 kHz24, 32 kbit/s16 bit40 msYesNoNoNo
G.722.1CModulated Lapped Transform, (based on Siren Codec), Lossy32 kHz24, 32, 48 kbit/s16 bit40 msYesNoNoNo
G.722.2 (AMR-WB)multi-rate wideband ACELP, Lossy16 kHz6.60–23.85 kbit/s
(6.60, 8.85, 12.65, 14.25, 15.85, 18.25, 19.85, 23.05 or 23.85 kbit/s)		14 bit25 msYesYesYes: only in MPEG-4 Part 12 containerNo
G.723ADPCM, Lossy8 kHz24 or 40 kbit/s13 bit YesNoNoNo
G.723.1MP-MLQ, ACELP, Lossy8 kHz5.3, 6.3 kbit/s13 bit37.5 msYesNoNoNo
G.726ADPCM, Lossy8 kHz16, 24, 32, 40 kbit/s13 bit125 µsYesNoNoNo
G.727ADPCM, Lossy8 kHz16, 24, 32, 40 kbit/s13 bit YesYesNoNo
G.728low-delay CELP, Lossy8 kHz16 kbit/s13 bit0.625 msYesNoNoNo
G.729CS-ACELP, Lossy8 kHz8 kbit/s13 bit15 msYesNoNoNo
G.729DCS-ACELP, Lossy8 kHz6.4 kbit/s13 bit YesNoNoNo
G.729ECS-ACELP, Lossy8 kHz11.8 kbit/s13 bit15 msYesNoNoNo
G.729.1CELP, TDBWE, TDAC, Lossy8 or 16 kHz8–32 kbit/s
(12 layers; 2 kbit/s steps, (10 kbit/s omitted))		16 bit48.9375 msYesYesNoNo

Notes

  • The latency listed here is the total delay (frame size, plus all lookahead) at the normal operating sample rate (typically 44.1 kHz).

See also

Portal iconFree software portal

Notes and references

  1. ^ a b variable price
  2. ^ OpenCORE Media Framework, Retrieved 2009-08-13
  3. ^ a b VoiceAge Corporation (2007-10-14). "AMR Licensing Terms". Archived from the original on 2007-10-14. Retrieved 2009-09-12. 
  4. ^ a b VoiceAge Corporation (2007-06). "AMR Licensing Terms". VoiceAge Corporation. Retrieved 2009-09-12. 
  5. ^ a b c FFmpeg General Documentation - AMR external library, Retrieved on 2009-07-08
  6. ^ a b c Android AMR codecs, Retrieved on 2009-07-08
  7. ^ a b VoiceAge Corporation (2007-10-14). "AMR-WB+ Licensing Terms". Archived from the original on 2007-10-14. Retrieved 2009-09-12. 
  8. ^ a b VoiceAge Corporation (2006-11). "AMR-WB+ Licensing Terms". VoiceAge Corporation. Retrieved 2009-09-12. 
  9. ^ FLAC website, Retrieved 2009-09-01
  10. ^ Flake website, Retrieved 2010-12-17
  11. ^ a b c d Polycom, Inc. "Siren7/Siren14/G.719 License info". Polycom, Inc. Retrieved 2009-09-07. 
  12. ^ a b c d Polycom, Inc. "Polycom Siren 14/G 722.1C FAQs - What are the terms on the free license?". Polycom, Inc. Retrieved 2009-09-07. 
  13. ^ libg722_1
  14. ^ Cisco IP Communicator 7.0 Data sheet - support for iLBC Retrieved on 2009-07-08
  15. ^ Skype Community, Current Codec Uses, Retrieved on 2009-07-08
  16. ^ iLBC License — GIPS
  17. ^ WebRTC free license from Google, including iSAC and iLBC
  18. ^ Kuro5hin.org (2008-07-20) Patent Status of MPEG-1,H.261 and MPEG-2, Retrieved 2009-09-05
  19. ^ Musepack website, Retrieved 2009-09-01
  20. ^ [1]
  21. ^ http://opus-codec.org/license/
  22. ^ freeswitch.org libg722_1 - README, Retrieved 2009-09-08
  23. ^ "Libmsn - is a reusable, open-source, fully documented library for connecting to Microsoft's MSN Messenger service.". Libmsn project at Sourceforge.net. 2009. Retrieved 2009-09-07. 
  24. ^ KaKaRoTo (2008-02-12) MSN Protocol documentation, Pidgin.im mailinglist, Retrieved 2009-09-08
  25. ^ Speex website, Retrieved 2009-09-01
  26. ^ FFmpeg (2009-08-24) News - August 24, 2009 - TwinVQ decoding in upcoming stable version, Retrieved 2009-10-07
  27. ^ Vorbis website, Retrieved 2009-09-01
  28. ^ aoTuV website, Retrieved 2009-09-01
  29. ^ WavPack website, Retrieved 2009-09-01
  30. ^ Windows Media Encoder
  31. ^ http://www.microsoft.com/windows/wind owsmedia/licensing/licensing.aspx
  32. ^ Optional
  33. ^ a b The ffmpeg project has reverse engineered some codecs of the RealAudio and Windows Media Audio (DivX Audio v1 and DivX Audio v2) formats. This enables their use on any POSIX compatible system.
  34. ^ Microsoft has outsourced their WMA support on Mac OS X to Telestream, Inc. who created and maintain Windows Media Components for QuickTime, replacing Windows Media Player for Mac OS.
  35. ^ a b c Monogram DS filters, Retrieved 2009-10-22
  36. ^ About QuickTime 6.3 (Apple Knowledge Base), In QuickTime 6.3 the AMR codec is natively supported and the .AMR file format supported with the free-to-download 3GPP Component, Retrieved 2012-12-11
  37. ^ Media formats supported by QuickTime Player in Mac OS X 10.6.x (Apple Knowledge Base), "Media formats and codecs that QuickTime Player can play back in Mac OS X v10.6.x or later" AMR is listed both under "File formats" and "Codecs or components", Retrieved 2012-12-11
  38. ^ MPEG 2 AAC was limited to a 96 kHz sampling rate, however, with MPEG 4 AAC, a later version part of the MPEG 4 specification, the maximum sampling rate has been increased to 192 kHz.
  39. ^ Algorithmic delay and synchronization in MPEG audio codecs
  40. ^ "Codec Feature Comparison". Retrieved December 14, 2011. 
  41. ^ a b Predrag Supurovic (1998-09). "MPEG Audio Frame Header". Retrieved 2009-07-11. 
  42. ^ ISO/IEC JTC1/SC29/WG11 - Audio Subgroup. "MPEG Audio FAQ Version 9, MPEG-1 and MPEG-2 BC". Retrieved 2010-02-27. 
  43. ^ "Opus". Retrieved August 22, 2012. 
  44. ^ The Apple Lossless Format
  45. ^ Lossless compression is always VBR

External links

(Sebelumnya) Comparison of archive formatsComparison of BitTorrent sites (Berikutnya)