Comparison of audio coding formats explained

The following tables compare general and technical information for a variety of audio coding formats.

For listening tests comparing the perceived audio quality of audio formats and codecs, see the article Codec listening test.

General information

Audio compression formatCreatorFirst public release dateLatest stable versionCostProprietary implementations (codecs)Open-source implementations (codecs)Uses
Music reproduction (consumer audio)Telephony appLossless audio compressionPatentedDRM
EncoderPlayer
AACISO/IEC MPEG Audio Committee1997ISO/IEC 14496-3Nero Digital Audio, Apple CoreAudio (via QuickTime, iTunes or afconvert[1]), Fraunhofer FDK AACDigital TV service, Digital Radio, Internet streaming
AC-3Dolby Laboratories1992ATSC A52:2018DVD players, digital television, CamcorderTheatrical movie presentation, Digital TV service & home-video (personal recorders, DVD, etc.)
AC-4Dolby Laboratories2014ATSC A342:2022-03Digital television, Harmonic Inc., DS Broadcast, Ateme, Synamedia, Dolby Media Encoder & Dolby Encoding EngineDigital TV service
ALACApple Inc.2004-04-28QuickTime 7.6QuickTime, iTunes, RealPlayerMusic archivalPossible, but never implemented
ALSISO/IEC MPEG Audio Committee2005ISO/IEC 14496-3MPEG-4 ALS-
AMBEDigital Voice SystemsLow bandwidth HF/VHF digital radio, VoIP trunking
AMR3GPP1999-06-22ETSI TS 126 071 V9.0.0 (2009)QuickTime, RealPlayervoice recording
AMR-WB
(G.722.2)
3GPP2001-04-10ETSI TS 126 190 V8.0.0 (2009-01)QuickTime, RealPlayervoice recording
AMR-WB+3GPP2004-06-14ETSI TS 126 290 V8.0.0 (2009-01)voice recording
aptXQualcomm19892007Broadcast audio codecs: 2wcom systems, Systembase, APT, AVT, Harris Corporation, MAYAH, Prodys, Qbit; wireless headphones: iSkin, JayBird Gear, DTS discs for moviesLow latency Studio/transmitter link, Bluetooth A2DP stereo, digital wireless microphone
ATRACSony Corp.1991ATRAC3plusMiniDisc, Walkman, VAIO, Clie, PlayStation 3, PlayStation 4, PlayStation 5, PlayStation Portable, PlayStation Vita, SDDS, SonicStage, SoundForge, RealPlayer, ConnectPlayervoice recording, theatrical movie presentation
BroadVoice (BV16, BV32)Broadcom2009-08-191.2Speech, VoIP, Low latency, voice recording
CELTXiph.Org Foundation, Jean-Marc Valin2007-12-080.11.1 (merged into Opus)Speech, VoIP, Low latency, Studio/transmitter link, wireless audio
Codec2David Rowe2010-08-251.2.0(2023-07-14)Low bandwidth HF/VHF digital radio, VoIP trunking
EncodecFacebook2022-10-25v0.1.1(2022-10-26)Speech, VoIP, voice recording
Enhanced AC-3 (E-AC-3)Dolby Laboratories2004ATSC A52:2018Digital televisionTheatrical movie presentation, digital TV service & home-video (personal recorders, DVD, etc.)
EVSFraunhofer, JVC Kenwood, NTT, NTT Docomo, Panasonic, Ericsson2014
FLACXiph.Org Foundation, Josh Coalson2001-07-201.4.3(2023-06-23)Music archival[2]
G.711ITU-T1972 (ITU-T standard from 1988)G.711 Appendix II (02/00)Various proprietary VoIP softwarevoice recording
G.722ITU-T1988-11Various proprietary VoIP softwarevoice recording
G.722.1ITU-T1999-09G.722.1 (05/05)Various proprietary VoIP softwarevoice recording
G.722.2
(AMR-WB)
ITU-T (adopted directly from 3GPP)2002-01G.722.2 (07/03)QuickTime, RealPlayervoice recording, audio
G.723.1ITU-T1996-03G.723.1 (05/06)Various proprietary VoIP softwarevoice recording
G.726ITU-T1990-12Various proprietary VoIP softwarevoice recording
G.728ITU-T1992-09Various proprietary VoIP softwarevoice recording
G.729ITU-T1996-03G.729 (06/12)[3] Various proprietary VoIP softwarevoice recording
G.729.1ITU-T2006-05G.729.1 Am.8 (03/13)Various proprietary VoIP softwarevoice recording, DECT telephony
GSM-FRETSI Special Mobile Group1990-1994 (ETS 300 580-2)ETSI EN 300 961 V8.1.1 (2000–11)voice recording
HE-AACISO/IEC MPEG Audio Committee2003ISO/IEC 14496-3
iLBCGlobal IP Solutions2002RFC 3951Cisco IP Communicator,[4] old versions of Skype[5] voice recording[6]
iSACGlobal IP SolutionsYahoo! Messengervoice recording[7]
LAMichael Bevin2002-09-070.4b(2004-02-08)Winamp with old plugin version, foobar2000 with old plugin versionMusic archival
LC3Bluetooth SIG2022-04-111.03(2023-05-09)?Speech
LDACSony Corp.2015-04?Sony Walkman, Sony Products, mobile phonesBluetooth audio
LHDCSavitech20175.0.6 (2022-08-03)Mobile phones, Bluetooth headphones, Home receiversBluetooth audio
L2HCHuawei20203.0 (2023-09-19)Huawei products, EMUI, HarmonyOSAndroid 10, OpenHarmony, Oniro OSBluetooth audioNearLink audio
LyraGoogle2021-04-061.32 / V3(2022-12-21)Google DuoSpeech, VoIP, voice recording
Monkey's AudioMatthew T. Ashland200010.52(2024-02-28)Music Archival
MP1ISO/IEC MPEG Audio Committee1991-12-06ISO/IEC 11172-3, ISO/IEC 13818-3-
MP2 (MPEG-1, 2 Audio Layer II)ISO/IEC MPEG Audio Committee1993ISO/IEC 11172-3, ISO/IEC 13818-3various DVD software, video software, audio softwareDAB, DVB, DVD, VCD, SVCD[8]
MP3ISO/IEC MPEG Audio Committee1993ISO/IEC 11172-3, ISO/IEC 13818-3FhG, l3enc, MP3enc, (old implementations: Xing TOMPG, SCMPX)-[9] (optional, rarely used)
MPEG-H 3D AudioISO/IEC MPEG Audio Committee2013-01ISO/IEC 23008-3FhG, MainConcept (encoding only)Digital TV service, voice recording
MusepackFrank Klemm/MDT19971.30(2009-04-02)-
Nellymoser AsaoNellymoser Inc.2002Adobe Flash, Flash Playervoice recording
OptimFROGFlorin Ghido2001-12-165.100 (2016-09-02)OptimFROG and some media players (decoding only).Music archival
OpusXiph.Org Foundation, Internet Engineering Task Force2012-09-11RFC 6716 (libopus 1.5.1)Speech, VoIP, Low latency, Studio/transmitter link, wireless audio, voice recording, WebRTC[10]
OSQSteinberg2002?WaveLabMusic archival
QOADominic Szablewski2023-02-021.0(2023-04-24)-
SacSebastian Lehmann2006-09-01v0.7.6 (2024-07-04)Music archival
SatinMicrosoft2020Microsoft Teams, SkypeSpeech, VoIP, voice recording
SBCBluetooth SIG2003A2DP 1.3 (2012-07-24)A2DPBluetooth audio
ShortenTony Robinson1993-03-303.6.1(2007-03-19, final release)Shorten-
SILKSkype Limited2009-01-07Merged into OpusSkypevoice recording
Siren 7PictureTel Corp. (now Polycom Inc.)1999Microsoft Office Communicatorvoice recording
SNACHubert Siuzdak2024-02-201.2 (2024-04-04)
SpeexXiph.Org Foundation, Jean-Marc Valin2003-03-241.2.0 (obsoleted by Opus)Adobe Flash Player 10voice recording
SVOPCSkype Limited2007-03-282008-09-23 (Skype 3.8) (replaced by SILK)Skypevoice recording
Tom's lossless Audio Kompressor Thomas Becker2007-01-262.3.3(2022-06-30)Winamp with TAK plugin, foobar2000 with plugin, XMPlayMusic archival
TSACFabrice Bellard2024-04-082024-04-08Speech, VoIP, voice recording
True Audio (TTA)TAU Software19992.3(2015-02-24)-
TwinVQNippon Telegraph and Telephone1996 (?)Winamp with VQF plugin, NTT TwinVQ player/encoder, Yamaha SoundVQ player, Nero Media Playerspeech
USACFraunhofer IIS20124.4.0(2023-06-21)EZ CD Audio Converter, FFmpeg with Mainconcept plugin (encoder only), Sonnox, Apple (decoder only), QuickTime (Mac version & decoder only).-
Vorbis (Ogg)Xiph.Org Foundation2000-05-111.3.7(2020-07-04)-
WavPackConifer Software19985.7.0(2024-02-29)Music archival
Windows Media AudioMicrosoft199911.0
Windows Media Player, Windows Media Encoderinternet streaming[11]
Audio compression formatCreatorFirst public release dateLatest stable versionEncoderPlayerProprietary implementations (codecs)Open-source implementations (codecs)Uses
Music reproduction (consumer audio)Telephony appLossless audio compressionPatentedDRM
cost

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, 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.
  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.

Multimedia frameworks support

Audio compression formatACMDirectShowQuickTimeGStreamerFFmpegMedia Foundation
8SVX (ffdshow) (ffdshow) (Perian) (GStreamer FFmpeg plug-in) (ffdshow)
AAC (ffdshow, Monogram) (GStreamer FFmpeg plug-in)
AC3 (ffdshow) (Perian) (GStreamer FFmpeg plug-in)
AC4 (GStreamer external plugins with Dolby proprietary libraries)
ALS
AMR[19] [20] (GStreamer Ugly Plug-ins)
ALAC (ffdshow) (GStreamer FFmpeg plug-in)
aptX
ATRAC3 (ffdshow) (ffdshow) (Perian) (GStreamer FFmpeg plug-in) (ffdshow)
ATRAC3plus (ffdshow)
CELT
Cook Codec (ffdshow) (ffdshow) (Perian) (GStreamer FFmpeg plug-in) (ffdshow)
DCA aka DTS (ffdshow) (ffdshow) (Perian) (GStreamer FFmpeg plug-in) (ffdshow)
DTS-HD (ffdshow) (ffdshow) (Perian) (GStreamer FFmpeg plug-in) (ffdshow)
E-AC-3 (ffdshow) (Perian) (GStreamer FFmpeg plug-in)
FLAC (ffdshow) (Perian) (GStreamer Base Plug-ins, GStreamer FFmpeg plug-in)
L2HC
HE-AAC
Monkey's Audio (ffdshow) (ffdshow) (Perian) (GStreamer FFmpeg plug-in) (ffdshow)
WavPack (ffdshow) (ffdshow) (Perian) (GStreamer FFmpeg plug-in) (ffdshow)
Shorten (ffdshow) (ffdshow) (Perian) (GStreamer FFmpeg plug-in) (ffdshow)
Sonic Audio (ffdshow) (ffdshow) (Perian) (GStreamer FFmpeg plug-in) (ffdshow)
MP3 (GStreamer Ugly, GStreamer FFmpeg plug-in)
RealAudio (ffdshow) (ffdshow) (Perian) (GStreamer FFmpeg plug-in, GStreamer DLL loader plugin + Binary Codec Packages) (ffdshow)
Speex (ffdshow) (ffdshow) (Perian) (GStramer Good Plug-ins, GStreamer FFmpeg plug-in) (ffdshow)
Vorbis (ffdshow) (ffdshow) (Perian) (GStreamer Base Plug-ins, GStreamer FFmpeg plug-in) (ffdshow)
La ??? (ffdshow)
LPAC (ffdshow)
Windows Media Audio v1 (Perian) (GStreamer FFmpeg plug-in)
Windows Media Audio v2 (Perian) (GStreamer FFmpeg plug-in)
Windows Media Audio Pro (Perian) (GStreamer FFmpeg plug-in)
Windows Media Audio Lossless (flip4mac) (GStreamer FFmpeg plug-in)
Windows Media Audio Voice
Musepack (ffdshow) (ffdshow, Monogram[21]) (Perian) (GStreamer FFmpeg plug-in) (ffdshow)
Meridian Lossless Packing (ffdshow) (ffdshow) (Perian) (GStreamer FFmpeg plug-in) (ffdshow)
Nellymoser Asao Codec in Flash (ffdshow) (ffdshow) (Perian) (GStreamer FFmpeg plug-in) (ffdshow)
OptimFROG (ffdshow)
Truespeech (Perian) (GStreamer FFmpeg plug-in) (ffdshow)
True Audio (TTA) (ffdshow) (ffdshow) (Perian) (GStreamer FFmpeg plug-in) (ffdshow)
QCELP (ffdshow) (ffdshow) (GStreamer FFmpeg plug-in) (ffdshow)
Audio compression formatACMDirectShowQuickTimeGStreamerFFmpegMedia Foundation

Technical details

Lossy formats
Audio compression formatAlgorithmSample rateBit rateLatencyCBRVBRStereoMultichannel
AACMDCT, Hybrid Subband (AAC-HE)8–192 kHz,[22] also: 7.35 kHz, but used rarely.8–529 kbit/s (stereo, 44.1 kHz)8–576 kbit/s (stereo, 48 kHz)20–405 ms[23]

Dual, Mid/Side, Intensity, Parametric

Up to 48 channels

AC3MDCT32, 44.1, 48 kHz32–640 kbit/s32–48 ms

Up to 6 channels

AC4MDCT48 kHz24-1536 kbit/s?

Up to 24 channels

AMBE8 kHz2-9.6 kbit/s
AMRACELP8 kHz4.75, 5.15, 5.90, 6.70, 7.40, 7.95, 10.20, 12.20 kbit/s25 ms
AMR-WB
(G.722.2)
ACELP16 kHz6.60, 8.85, 12.65, 14.25, 15.85, 18.25, 19.85, 23.05, 23.85 kbit/s25 ms

only in MPEG-4 Part 12 container

AMR-WB+ACELP8, 11.025, 16, 22.05, 32, 44.1, 48 kHz6–36 kbit/s (mono)
7–48 kbit/s (stereo)
60–90 ms
aptXSubband ADPCM24–48 kHz (stereo)192–384 kbit/s (stereo)2 ms (4:1)

Up to 8 channels

ATRAC1MDCT-Hybrid Subband44.1 kHz292 kbit/s>100 ms

Dual Only

ATRAC3MDCT-Hybrid Subband44.1 kHz66, 105, 132, 146, 176, 264, 352 kbit/s>100 ms

Dual (LP2), Mid/Side (LP4)

ATRAC3plusMDCT-Hybrid Subband44.1, 48 kHz32–768 kbit/s>100 ms

Up to 8 channels

ATRAC9MDCT-Hybrid Subband12, 24, 48 kHz36-672 kbit/s>100 ms

Up to 8 channels

BroadVoice (BV16, BV32)Two-Stage Noise Feedback Coding (TSNFC)8, 16 kHz16, 32 kbit/s[24] 5 ms
Codec2Speech8 kHz0.7, 1.2, 1.3, 1.4, 1.6, 2.4, 3.2 kbit/s20–40 ms
E-AC3MDCT32, 44.1, 48 kHz32–6144 kbit/s5.33–48 ms

Up to 15 channels

E-aptXSubband ADPCM15–48 kHz60, 384, 767, 1024 kbit/s, 1.28 Mbit/s (4:1)

Up to 8 channels

EncodecNeural networks24 kHz (Mono)48 kHz (Stereo)1.5 (Mono only), 3, 6, 12, 24 kbit/s?
EVSSpeech8, 16, 32, 48 kHz5.9, 7.2, 8, 9.6, 13.2, 16.4, 24.4, 32, 48, 64, 96, 128 kbit/s + AMR-WB bitrate modes20 ms
GSM-HRVSELP8 kHz5.6 kbit/s25 ms
GSM-FRRPE-LTP8 kHz13 kbit/s20–30 ms
GSM-EFRACELP8 kHz12.2 kbit/s20–30 ms
HE-AAC22 ~ 96 kHz (also 16 kHz, but used somewhat rarely)16 ~ 80 kbit/s (other bitrates, but used somewhat rarely: 3 ~ 264 kbit/s)~130 ms[25]

Dual, Mid/Side, Intensity, Parametric

Up to 48 channels

HVXCSpeech8 kHz2, 4 kbit/s36 ms
iLBCBlock Independent LPC8 kHz13.33, 15.20 kbit/s25, 40 ms
iSACTransform coding16, 32 kHz10–52 kbit/s33, 63 ms
LC3Speech8, 16, 24, 32, 48 kHz16-320 kbit/s7.5-10 ms
LDACSubband ADPCM44.1, 48, 88.2, 96, 176.4, 192 kHz303, 606, 909 kbit/s (44.1/88.2/176.4 kHz)330, 660, 990 kbit/s (48/96/192 kHz)?
LHDCSubband ADPCM44.1, 48, 96 kHz400, 560, 900 kbit/s?
L2HCSubband ADPCM44.1, 48, 96, 192 kHz400, 560, 960, 1920 kbit/s
LyraSpeech8, 16, 32, 48 kHz3.2, 6, 9.2 kbit/s20 ms
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, 288, 320 kbit/s>100 ms

Dual, Mid/Side, Intensity

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

but decoders are not required to support it

Dual, Intensity

MPEG-2 Audio Layer II (MP2)Subband16, 22.05, 24 kHz[26] [27] 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160 kbit/s

but decoders are not required to support it

up to 5 full range audio channels and an LFE-channel with MPEG Multichannel

MusepackSubband32, 37.8, 44.1, 48 kHz20–350 kbit/s

Up to 8 channels

OpusMDCT, LPC, LTP8–48 kHz6–510 kbit/s5–66.5 ms

Up to 255 channels[28]

RealAudioMDCTVaries (see article)Varies (see article)Varies

Up to 6 channels

SatinSpeech8, 16, 32, 48 kHz6-36 kbit/s?
SILKLPC, LTP8, 12, 16, 24 kHz6–40 kbit/s25 ms
Siren 7Derived from PT716plus, MLT16 kHz16, 24, 32 kbit/s40 ms
Siren 14MLT32 kHz24, 32, 48 kbit/s (mono)
48, 64, 96 kbit/s (stereo)
40 ms
Siren 22MLT48 kHz32, 48, 64 kbit/s (mono)
64, 96, 128 kbit/s (stereo)
40 ms
SNACNeural networks24, 32, 44.1 kHz0.98 (24 kHz), 1.9 (32 kHz), 2.6 (44.1 kHz) kbit/s
SpeexCELP8, 16, 32, (48) kHz2.15–24.6 kbit/s (NB)
4–44.2 kbit/s (WB)
30 ms (NB)
34 ms (WB)

Intensity

TSACNeural networks, modified version of Descript Audio Codec, extended for stereo with a transformer model to shrink even more while keeping the quality high.44.1 kHz (Mono and Stereo). Other sample rates: Uncertain.~0.45-5.5 kbps (mono)~0.6-7.5 kbps (stereo)?
USAC?7.35, 8, 11.025, 12, 16, 19.2, 22.05, 24, 32, 38.4, 44.1, 48, 57.6, 64, 88.2, 96 kHz6-128 kbit/s (mono)12-320 kbit/s (stereo)
VMR-WBACELP16 kHz8.55, 4.0, 0.8, 13.3, 6.2, 2.7, 1.0 kbit/s33.75 ms
Vorbis (Ogg)MDCT8–192 kHz45-500 kbit/s (32-500 kbit/s for aoTuV tunings) >100 ms/ABR

Dual, Lossless, Phase, Point (Intensity)

Up to 255 channels

WavPack LossyPrediction, Quantization1 Hz to 16.777216 MHz196 kbit/s and up in lossy mode (for CD audio)3523.8 ms

Up to 256 channels

Windows Media Audio StandardMDCT8, 11.025, 16, 22.05, 32, 44.1, 48 kHz8–768 kbit/s>100 ms
Windows Media Audio ProMDCT8, 11.025, 16, 22.05, 32, 44.1, 48, 88.2, 96 kHz (8-22.05kHz not available in encoders that uses DirectShow like Switch by NCH Software or Windows Media Encoder)4–768 kbit/s>100 ms

At least 8 channels, expandable

Windows Media Audio VoiceACELP?8, 11.025, 16, 22.05 kHz officially (can be hacked to support higher sample rates)4-20 kbit/s officially (can be hacked to support higher bitrates)
Lossless formats
Audio compression formatAlgorithmSample rateBits per sampleLatencyStereoMultichannel
ALACLossless1–384 kHz16, 20, 24, 32[29]

Up to 8 channels

ALSLossless0–4 GHz8, 16, 24, 32 (int or float)

Up to 65536 channels

ATRAC Advanced LosslessLossless44.1 kHz16
Dolby TrueHDLossless48, 96, 192 kHz16, 20, 24

5.1, 7.1, and Dolby Atmos object-based audio[30]

DTS-HD Master AudioLossless48, 96, 192 kHz16, 24

Up to 7.1[31]

FLACLossless1–1.048575 MHz (>655.350 kHz need not be streamable)[32] 4–324.3–92 ms (46.4 ms typical)

Up to 8 channels

HD-AAC
LALossless0–4 GiHz16?
L2HCLossless44.1kHz16
Monkey's AudioLossless1–655.350 kHz8, 16, 24, 32 and 32-bit float1670 to 26,749 ms (varies with compression)

Up to 32 channels since version 5.50[33]

OptimFROGLossless0–4 GiHz[34] 8, 16, 24, 32 (int or float)
OSQLossless6, 8, 11.025, 16, 22.05, 32, 44.1, 48, 64, 88.2, 96 kHz8, 16, 20, 24
RealAudio LosslessLossless8, 11.025, 16, 22.05, 32, 44.1 kHz16Varies
SacLossless1–48 kHz1-16?
TAKLossless8–192 kHz8, 16, 24?

Up to 6 channels

True Audio (TTA)Lossless0–4 GiHz8, 16, 24approx. 1045 ms[35]

Up to 16 (with ffmpeg), but no channel allocation

WavPack LosslessLossless, Hybrid1 Hz to 1 GiHzUp to 32 (and 32-bit float), and 1-bit DSD.

Up to 256 channels

Windows Media Audio LosslessLossless8, 11.025, 16, 22.05, 32, 44.1, 48, 88.2, 96 kHz16, 24>100 ms

Up to 6 channels

ITU-T formats
Audio compression formatAlgorithmSample rateBit rateBits per sampleLatencyCBRVBRStereoMultichannel
G.711companding A-law or μ-law, PCM8 kHz64 kbit/s8 bit (log)125 μs (typical)
G.711.0Lossless compression of G.7118 kHz0.2–65.6 kbit/s8 bit (log)5–40 ms
G.711.1MDCT, A-law, μ-law8, 16 kHz64, 80, 96 kbit/s16 bit11.875 ms
G.718CELP, MDCT, Lossy8, 16 kHz8, 12, 12.65, 16, 24, 32 kbit/s16 bit42.875–43.875 ms
G.718BCELP, MDCT, Lossy, Sinusoidal Coding32 kHz36, 40, 48 kbit/s16 bit49.625 ms
G.719MDCT,[36] Lossy (incorporates elements of Siren Codec and Ericsson technology)48 kHz32–88 kbit/s in 4 kbit/s steps, 88–128 kbit/s in 8 kbit/s steps16 bit40 ms

only in MPEG-4 Part 12 container

only in MPEG-4 Part 12 container

G.721ADPCM, Lossy8 kHz32 kbit/s13 bit
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 ms
G.722.1Modulated Lapped Transform (MDCT), Lossy (based on Siren Codec)16 kHz24, 32 kbit/s16 bit40 ms
G.722.1CModulated Lapped Transform (MDCT), Lossy (based on Siren Codec)32 kHz24, 32, 48 kbit/s16 bit40 ms
G.722.2 (AMR-WB)multi-rate wideband ACELP, Lossy16 kHz6.60, 8.85, 12.65, 14.25, 15.85, 18.25, 19.85, 23.05, 23.85 kbit/s14 bit25 ms

only in MPEG-4 Part 12 container

G.723ADPCM, Lossy8 kHz24, 40 kbit/s13 bit
G.723.1MP-MLQ, ACELP, Lossy8 kHz5.3, 6.3 kbit/s13 bit37.5 ms
G.726ADPCM, Lossy8 kHz16, 24, 32, 40 kbit/s13 bit125 μs
G.727ADPCM, Lossy8 kHz16, 24, 32, 40 kbit/s13 bit
G.728low-delay CELP, Lossy8 kHz16 kbit/s13 bit0.625 ms
G.729CS-ACELP, Lossy8 kHz8 kbit/s13 bit15 ms
G.729DCS-ACELP, Lossy8 kHz6.4 kbit/s13 bit
G.729ECS-ACELP, Lossy8 kHz11.8 kbit/s13 bit15 ms
G.729.1CELP, TDBWE, TDAC (MDCT), Lossy8, 16 kHz8 kbit/s, 12–32 kbit/s in 2 kbit/s steps16 bit48.9375 ms

Notes

See also

External links

Notes and References

  1. https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man1/afconvert.1.html afconvert(1) Manual Page - Apple Developer
  2. Web site: FLAC (Free Lossless Audio Codec), Version 1.1.2. December 21, 2015. www.loc.gov.
  3. Web site: Most Licensed Patents under the G.729 Consortium have expired. https://web.archive.org/web/20170202062530/http://www.sipro.com/G729.html. 2017-02-02. 2017-12-22.
  4. http://www.cisco.com/en/US/prod/collateral/voicesw/ps6788/phones/ps5475/data_sheet_c78-505261.html Cisco IP Communicator 7.0 Data sheet - support for iLBC
  5. http://forum.skype.com/index.php?showtopic=176491 Skype Community, Current Codec Uses
  6. Web site: IPR Details - Google Inc.'s Statement about IPR related to RFC 3951 and RFC 3952. datatracker.ietf.org. 6 May 2017.
  7. Web site: Additional IP rights grant - WebRTC. sites.google.com. 6 May 2017. 16 September 2016. https://web.archive.org/web/20160916102401/http://sites.google.com/site/webrtc/license-rights/additional-ip-grant. dead.
  8. Kuro5hin.org (2008-07-20) Patent Status of MPEG-1, H.261 and MPEG-2, Retrieved 2009-09-05
  9. See the main MP3 article for full details.
  10. Web site: License – Opus Codec. opus-codec.org. 6 May 2017.
  11. Web site: Using protected files (DRM) . . 2020-04-17 . 2010-08-20 . https://web.archive.org/web/20100820001555/http://www.microsoft.com/windows/windowsmedia/player/faq/drm.mspx#q11_1 . dead .
  12. Web site: SoundCodecs. Rockbox.org Wiki.
  13. Web site: Supported media formats. Android Developers.
  14. Web site: Supported formats. Android media.
  15. Web site: Audio/Video - The Chromium Projects. www.chromium.org.
  16. Web site: Audio formats for local playback . Huawei . Huawei . 29 April 2024.
  17. 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.
  18. 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.
  19. http://support.apple.com/kb/TA47643 About QuickTime 6.3 (Apple Knowledge Base)
  20. http://support.apple.com/kb/TA47643 Media formats supported by QuickTime Player in Mac OS X 10.6.x (Apple Knowledge Base)
  21. http://blog.monogram.sk/janos/directshow-filters/ Monogram DS filters
  22. 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.
  23. Web site: Algorithmic delay and synchronization in MPEG audio codecs - EE Times. EETimes. 6 May 2017.
  24. Web site: Support Documents and Downloads. www.broadcom.com. 6 May 2017.
  25. Web site: Schnell . Markus . Schmidt . Markus . Jander . Manuel . Albert . Tobias . Geiger . Ralf . Ruoppila . Vesa . Ekstrand . Per . Bernhard . Grill . 2008-10-01 . MPEG-4 Enhanced Low Delay AAC - A New Standard for High Quality Communication . English . Audio Engineering Society. Available from fraunhofer.de
  26. Web site: Predrag Supurovic . MPEG Audio Frame Header . September 1998 . 2009-07-11 .
  27. Web site: MPEG Audio FAQ Version 9, MPEG-1 and MPEG-2 BC . ISO/IEC JTC1/SC29/WG11 - Audio Subgroup . 2010-02-27.
  28. Web site: Opus Codec . 2014-07-02.
  29. Web site: macosforge/alac. GitHub. 6 May 2017.
  30. Web site: Dolby Atmos for Home Theaters. Dolby.com. 4 April 2018. https://web.archive.org/web/20180520182729/https://blog.dolby.com/2014/06/dolby-atmos-home-theaters-questions-answered/. 20 May 2018. dead.
  31. https://datahacker.blog/files/83/Multimedia/50/DTS-HD--and-DTS-HD-Master-Audio-Enabling-HDAudio-Across-an-Evolving-Media-Delivery-Landscape-2012.pdf "DTS-HD and DTS-HD Master Audio: Enabling HD Audio Across an Evolving Media Delivery Landscape"
  32. sample rates from 1 up to 1048575 hertz and bit depths from 4 up to 32 bits https://datatracker.ietf.org/doc/draft-ietf-cellar-flac
  33. Web site: Monkey's Audio - a fast and powerful lossless audio compressor .
  34. https://wiki.multimedia.cx/index.php/OptimFROG 4 bytes - sample rate
  35. Web site: Tau Projects. en.true-audio.com. 6 May 2017. 27 October 2015. https://web.archive.org/web/20151027213549/http://en.true-audio.com/TTA_Lossless_Audio_Codec_-_Format_Description#TTA_Frame_Structure. dead.
  36. Book: Britanak . Vladimir . Rao . K. R. . K. R. Rao . Cosine-/Sine-Modulated Filter Banks: General Properties, Fast Algorithms and Integer Approximations . 2017 . Springer . 9783319610801 . 31, 478 .