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 edit
| Audio compression format | Creator | First public release date | Latest stable version | Cost | Proprietary implementations (codecs) | Open-source implementations (codecs) | Uses (other than consumer audio) | Music reproduction (consumer audio) | Telephony app | Lossless audio compression | Patented | DRM | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Encoder | Player | ||||||||||||
| AAC | ISO/IEC MPEG Audio Committee | 1997 | ISO/IEC 14496-3 | Non-free[1] | Nero Digital Audio, Apple CoreAudio (via QuickTime, iTunes or afconvert[2]) | FAAC (encoding only), FAAD2 (decoding only), FFmpeg, Audiocogs[3] (decoding only), Fraunhofer FDK AAC | Digital TV service, Digital Radio, Internet streaming | Yes | AAC-LD/AAC-ELD | MPEG-4 SLS | Yes | FairPlay (.m4p only, discontinued) | |
| AC-3 | Dolby Laboratories | 1992 | ATSC A52:2018 | Free | DVD players, digital television, Camcorder | FFmpeg, liba52 (decoding only), Aften (encoding only), libavc (2.0 channels max) | Theatrical movie presentation, Digital TV service & home-video (personal recorders, DVD, etc.) | No | No | No | No | ? | |
| AC-4 | Dolby Laboratories | 2014 | ATSC A342:2022-03 | Non-free | Digital television, Harmonic Inc., DS Broadcast, Ateme, Synamedia, Dolby Media Encoder & Dolby Encoding Engine | ExoPlayer (decoding only for supported mobile devices) | Digital TV service | No | No | No | Yes | ? | |
| ALAC | Apple Inc. | 2004-04-28 | QuickTime 7.6 | Free | QuickTime, iTunes, RealPlayer | MacOSforge, FFmpeg, Audiocogs[4] (decoding only) | Music archival | Yes | No | Yes | Free | Possible, but never implemented | |
| ALS | ISO/IEC MPEG Audio Committee | 2005 | ISO/IEC 14496-3 | Free | MPEG-4 ALS | FFmpeg (decoding only) | - | Yes | No | Yes | Yes | ? | |
| AMBE | Digital Voice Systems | ? | ? | Non-free | ? | mbelib | Low bandwidth HF/VHF digital radio, VoIP trunking | No | No | No | Yes | ? | |
| AMR | 3GPP | 1999-06-22 | ETSI TS 126 071 V9.0.0 (2009) | Non-free[5][6] | QuickTime, RealPlayer | FFmpeg (decoding only), FFmpeg with OpenCORE libraries,[7] Android[8] | voice recording | No | Yes | No | Yes | No | |
| AMR-WB (G.722.2) | 3GPP | 2001-04-10 | ETSI TS 126 190 V8.0.0 (2009-01) | Non-free | QuickTime, RealPlayer | FFmpeg (decoding only),[7] FFmpeg with VisualOn libraries, Android (decoding only),[8] opencore-amr for both encoding and decoding | voice recording | No | Yes | No | Yes | No | |
| AMR-WB+ | 3GPP | 2004-06-14 | ETSI TS 126 290 V8.0.0 (2009-01) | Non-free[9][10] | ? | ? | voice recording | Yes | Yes | No | Yes | No | |
| aptX | Qualcomm | 1989 | 2007 | Non-free | Broadcast audio codecs: 2wcom systems, Systembase, APT, AVT, Harris Corporation, MAYAH, Prodys, Qbit; wireless headphones: iSkin, JayBird Gear, DTS discs for movies | FFmpeg | Low latency Studio/transmitter link, Bluetooth A2DP stereo, digital wireless microphone | Yes | No | No | Yes | No | |
| ATRAC | Sony Corp. | 1991 | ATRAC3plus | Non-free | MiniDisc, Walkman, VAIO, Clie, PlayStation 3, PlayStation 4, PlayStation 5, PlayStation Portable, PlayStation Vita, SDDS, SonicStage, SoundForge, RealPlayer, ConnectPlayer | FFmpeg (decoding only, ATRAC Advanced Lossless is only partially supported) | voice recording, theatrical movie presentation | Yes | No | Yes | Yes | Yes | |
| BroadVoice (BV16, BV32) | Broadcom | 2009-08-19 | 1.2 | Free | ? | ? | Speech, VoIP, Low latency, voice recording | No | Yes | No | Free | No | |
| CELT | Xiph.Org Foundation, Jean-Marc Valin | 2007-12-08 | 0.11.1 (merged into Opus) | Free | ? | libcelt, FFmpeg with libcelt library (decoding only) | Speech, VoIP, Low latency, Studio/transmitter link, wireless audio | Yes | Yes | No | No | No | |
| Codec2 | David Rowe | 2010-08-25 | 1.2.0 (2023-07-14) | Free | ? | c2enc, c2dec | Low bandwidth HF/VHF digital radio, VoIP trunking | No | Yes | No | No | No | |
| Encodec | 2022-10-25 | v0.1.1 (2022-10-26) | Free | ? | Encodec | Speech, VoIP, voice recording | Yes | Yes | No | ? | No | ||
| Enhanced AC-3 (E-AC-3) | Dolby Laboratories | 2004 | ATSC A52:2018 | Non-free | Digital television | FFmpeg | Theatrical movie presentation, digital TV service & home-video (personal recorders, DVD, etc.) | No | No | No | Yes | Yes | |
| EVS | Fraunhofer, JVC Kenwood, NTT, NTT Docomo, Panasonic, Ericsson | 2014 | ? | Non-free | ? | ? | ? | ? | Yes | Yes | No | Yes | No |
| FLAC | Xiph.Org Foundation, Josh Coalson | 2001-07-20 | 1.4.3 (2023-06-23) | Free | FLAC,[11] Flake[12] (encoding only), FFmpeg, FLACCL[13] (encoding only), Audiocogs[14] (decoding only) | Music archival[15] | Yes | No | Yes | No | No | ||
| G.711 | ITU-T | 1972 (ITU-T standard from 1988) | G.711 Appendix II (02/00) | Free | Various proprietary VoIP software | FFmpeg, Ekiga, Asterisk (PBX) and almost any VoIP software | voice recording | No | Yes | No | No | No | |
| G.722 | ITU-T | 1988-11 | Free | Various proprietary VoIP software | Asterisk (PBX), QuteCom, FFmpeg | voice recording | No | Yes | No | No | No | ||
| G.722.1 | ITU-T | 1999-09 | G.722.1 (05/05) | Free[16][17] | Various proprietary VoIP software | FreeSWITCH,[18] PJSIP, etc | voice recording | No | Yes | No | Yes | No | |
| G.722.2 (AMR-WB) | ITU-T (adopted directly from 3GPP) | 2002-01 | G.722.2 (07/03) | Non-free | QuickTime, RealPlayer | FFmpeg (decoding only),[7] FFmpeg with VisualOn libraries, Android (decoding only)[8] | voice recording, audio | No | No | No | Yes | No | |
| G.723.1 | ITU-T | 1996-03 | G.723.1 (05/06) | Non-free | Various proprietary VoIP software | FFmpeg | voice recording | No | Yes | No | Yes | No | |
| G.726 | ITU-T | 1990-12 | Free | Various proprietary VoIP software | FFmpeg, Ekiga and other VoIP software | voice recording | No | Yes | No | No | No | ||
| G.728 | ITU-T | 1992-09 | Non-free | Various proprietary VoIP software | voice recording | No | Yes | No | Yes | No | |||
| G.729 | ITU-T | 1996-03 | G.729 (06/12) | Free[19] | Free | Various proprietary VoIP software | FFmpeg (decoding only) | voice recording | No | Yes | No | Expired[19] | No |
| G.729.1 | ITU-T | 2006-05 | G.729.1 Am.8 (03/13) | Free[19] | Free | Various proprietary VoIP software | voice recording, DECT telephony | No | Yes | No | No | No | |
| GSM-FR | ETSI Special Mobile Group | 1990-1994 (ETS 300 580-2) | ETSI EN 300 961 V8.1.1 (2000–11) | Free | FFmpeg (decoding only), FFmpeg with external library libgsm, Ekiga and other VoIP software | voice recording | No | Yes | No | ? | No | ||
| HE-AAC | ISO/IEC MPEG Audio Committee | 2003 | ISO/IEC 14496-3 | ? | ? | ? | Fraunhofer FDK AAC | ? | Yes | No | No | ? | ? |
| iLBC | Global IP Solutions | 2002 | RFC 3951 | Free | Cisco IP Communicator,[20] old versions of Skype[21] | Ekiga, Asterisk (PBX) and other VoIP software, FFmpeg with libilbc library | voice recording | No | Yes | No | Free[22] | No | |
| iSAC | Global IP Solutions | ? | Free | Yahoo! Messenger | WebRTC | voice recording | No | Yes | No | Yes[23] | ? | ||
| LA | Michael Bevin | 2002-09-07 | 0.4b (2004-02-08) | Free | Winamp with old plugin version, foobar2000 with old plugin version | ? | Music archival | Yes | No | Yes | No | No | |
| LC3 | Bluetooth SIG | 2022-04-11 | 1.03 (2023-05-09) | Free | ? | liblc3, Android 13, BlueZ | Speech | Yes | Yes | No | ? | No | |
| LDAC | Sony Corp. | 2015-04 | ? | Non-free | Sony Walkman, Sony Products, mobile phones | libldacdec, Android 8 (encoding only), BlueZ (encoding only) | Bluetooth audio | Yes | No | No | Yes | No | |
| LHDC | Savitech | 2017 | 5.0.6 (2022-08-03) | Non-free | Mobile phones, Bluetooth headphones, Home receivers | Android 10 | Bluetooth audio | Yes | No | Yes | Yes | No | |
| L2HC | Huawei | 2020 | 3.0 (2023-09-19) | Non-free | Huawei products, EMUI, HarmonyOS | Android 10, OpenHarmony, Oniro OS | Bluetooth audio NearLink audio | Yes | Yes | Yes | Yes | Yes | |
| Lyra | 2021-04-06 | 1.32 / V3 (2022-12-21) | Free | Google Duo | Lyra | Speech, VoIP, voice recording | Yes | Yes | No | ? | No | ||
| Monkey's Audio | Matthew T. Ashland | 2000 | 10.52 (2024-02-28) | Free | Monkey's Audio, FFmpeg (decoding only) | Music Archival | Yes | No | Yes | No | No | ||
| MP1 | ISO/IEC MPEG Audio Committee | 1991-12-06 | ISO/IEC 11172-3, ISO/IEC 13818-3 | Free | ? | FFmpeg (decoding only) | - | Yes | No | No | Expired | No | |
| MP2 (MPEG-1, 2 Audio Layer II) | ISO/IEC MPEG Audio Committee | 1993 | ISO/IEC 11172-3, ISO/IEC 13818-3 | Free[24] | various DVD software, video software, audio software | TooLAME (encoding only), TwoLAME (encoding only), FFmpeg | DAB, DVB, DVD, VCD, SVCD | Yes | No | No | Free[25] | No | |
| MP3 | ISO/IEC MPEG Audio Committee | 1993 | ISO/IEC 11172-3, ISO/IEC 13818-3 | Free | FhG, l3enc, MP3enc, (old implementations: Xing TOMPG, SCMPX) | LAME (encoding only), FFmpeg (decoding only), libmad (decoding only), Audiocogs[26] (decoding only), (old implementations: BladeEnc) | - | Yes | No | No | Expired[27] | Yes (optional, rarely used) | |
| MPEG-H 3D Audio | ISO/IEC MPEG Audio Committee | 2013-01 | ISO/IEC 23008-3 | Non-free | FhG, MainConcept (encoding only) | libmpegh, mpeghdec (decoding only) | Digital TV service, voice recording | Yes | No | No | Yes | No | |
| Musepack | Frank Klemm/MDT | 1997 | 1.30 (2009-04-02) | Free | Musepack,[28] FFmpeg (decoding only) | - | Yes | No | No | No | No | ||
| Nellymoser Asao | Nellymoser Inc. | 2002 | ? | Non-free | Adobe Flash, Flash Player | FFmpeg | voice recording | No | No | No | Yes | ? | |
| OptimFROG | Florin Ghido | 2001-12-16 | 5.100 (2016-09-02) | Free | OptimFROG and some media players (decoding only). | Some media players (decoding only) | Music archival | Yes | No | Yes | No | No | |
| Opus | Xiph.Org Foundation, Internet Engineering Task Force | 2012-09-11 | RFC 6716 (libopus 1.5.1) | Free | libopus, FFmpeg | Speech, VoIP, Low latency, Studio/transmitter link, wireless audio, voice recording, WebRTC | Yes | Yes | No | Yes[29] | No | ||
| OSQ | Steinberg | 2002 | ? | Free | WaveLab | FFmpeg (decoding only) | Music archival | Yes | No | Yes | No | No | |
| QOA | Dominic Szablewski | 2023-02-02 | 1.0 (2023-04-24) | Free | qoa, FFmpeg (decoding only) | - | Yes | Yes | No | No | No | ||
| Sac | Sebastian Lehmann | 2006-09-01 | v0.6.8 (2024-01-29) | Free | Sac | Music archival | Yes | No | Yes | No | No | ||
| Satin | Microsoft | 2020 | ? | Non-free | Microsoft Teams, Skype | ? | Speech, VoIP, voice recording | Yes | Yes | No | Yes | No | |
| SBC | Bluetooth SIG | 2003 | A2DP 1.3 (2012-07-24) | Free for Bluetooth | A2DP | BlueZ, FFmpeg | Bluetooth audio | Yes | No | No | Yes | No | |
| Shorten | Tony Robinson | 1993-03-30 | 3.6.1 (2007-03-19, final release) | Free | Shorten | FFmpeg (decoding only) | - | Yes | No | Yes | No (with commercial use restriction)[30][31] | No | |
| SILK | Skype Limited | 2009-01-07 | Merged into Opus | Free | Skype | SILK Speech Codec | voice recording | No | Yes | No | Yes | ? | |
| Siren 7 | PictureTel Corp. (now Polycom Inc.) | 1999 | ?[16][17] | Microsoft Office Communicator | FreeSWITCH (libg722_1,[32] aMSN (libsiren - part of libmsn),[33][34] FFmpeg (decoding only) | voice recording | No | Yes | No | Yes | ? | ||
| SNAC | Hubert Siuzdak | 2024-02-20 | 1.2 (2024-04-04) | Free | SNAC | Speech, VoIP, voice recording | Yes | Yes | No | No | No | ||
| Speex | Xiph.Org Foundation, Jean-Marc Valin | 2003-03-24 | 1.2.0 (obsoleted by Opus) | Free | Adobe Flash Player 10 | Speex,[35] FFmpeg with libspeex library | voice recording | No | Yes | No | No | No | |
| SVOPC | Skype Limited | 2007-03-28 | 2008-09-23 (Skype 3.8) (replaced by SILK) | Non-free | Skype | voice recording | No | Yes | No | Yes | No | ||
| Tom's lossless Audio Kompressor (TAK) | Thomas Becker | 2007-01-26 | 2.3.3 (2022-06-30) | Free | Winamp with TAK plugin, foobar2000 with plugin, XMPlay | FFmpeg (decoding only) | Music archival | Yes | No | Yes | No | No | |
| TSAC | Fabrice Bellard | 2024-04-08 | 2024-04-08 | Free | No | TSAC, Linux: [2], Windows (experimental): [3]. Does encoding and decoding in one app, no sepearte encoder and decoder | Speech, VoIP, voice recording | Yes | Yes | No | No | No | |
| True Audio (TTA) | TAU Software | 1999 | 2.3 (2015-02-24) | Free | TTA,[36] FFmpeg | - | Yes | No | Yes | No | No | ||
| TwinVQ | Nippon Telegraph and Telephone | 1996 (?) | Non-free | Winamp with VQF plugin, NTT TwinVQ player/encoder, Yamaha SoundVQ player, Nero Media Player | FFmpeg (decoding only)[37] | speech | Yes | No | No | Yes | ? | ||
| USAC | Fraunhofer IIS | 2012 | 4.4.0 (2023-06-21) | Non-free | ? | EZ CD Audio Converter, FFmpeg with Mainconcept plugin (encoder only), Sonnox, Apple (decoder only), QuickTime (Mac version & decoder only). | Exhale (encoder only), FFmpeg (decoding only with Fraunhofer FDK AAC library enabled for manually command), Android (decoder only) | - | Yes | No | No | No | No |
| Vorbis (Ogg) | Xiph.Org Foundation | 2000-05-11 | 1.3.7 (2020-07-04) | Free | libvorbis,[38] aoTuV,[39] FFmpeg | - | Yes | No | No | No | No | ||
| WavPack | Conifer Software | 1998 | 5.7.0 (2024-02-29) | Free | WavPack,[40] FFmpeg | Music archival | Yes | No | Yes | No | No | ||
| Windows Media Audio | Microsoft | 1999 | 11.0 | Free for consumer licensees of the Windows operating system [citation needed] | Free for licensees of the Windows operating system[41] | Windows Media Player, Windows Media Encoder | FFmpeg (decoding only for Pro, Lossless and Voice) | internet streaming | Yes | No | Yes | Yes | Optional[42] |
| Audio compression format | Creator | First public release date | Latest stable version | Encoder | Player | Proprietary implementations (codecs) | Open-source implementations (codecs) | Uses (other than consumer audio) | Music reproduction (consumer audio) | Telephony app | Lossless audio compression | Patented | DRM |
| cost | |||||||||||||
Notes edit
- 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.
- 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.
- Latest stable version is that of specification or reference tools.
- 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.
Operating system support edit
| Codec | Windows | macOS | Linux | BSD | Unix | Palm OS | Symbian OS | Rockbox[43] | iOS | Android[44][45] | Chromium[46] | HarmonyOS[47] | OpenHarmony | Oniro OS |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AAC | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| AC-3 | Yes | Yes | Yes | Yes | Yes | ? | Yes | Yes | Yes | Yes | ? | Yes | Yes | Yes |
| ALAC | Yes | Yes | Yes | Yes | Yes | No | No | Yes | Yes | Yes | No | Yes | No | No |
| ALS | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? | ? |
| aptX | Yes | Yes | Yes | Yes | Yes | No | No | No | No | Yes | No | No | ? | ? |
| CELT | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | No | No | No | No | No | No |
| E-AC3 | Yes | Yes | Yes | Yes | Yes | ? | Yes | No | Yes | Yes | ? | Yes | Yes | Yes |
| FLAC | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| LC3 | Yes | No | Yes | Yes | Yes | No | No | No | No | Yes | No | Yes | Yes | Yes |
| L2HC | Yes | No | Yes | No | No | No | No | No | No | Yes | No | Yes | Yes | Yes |
| Monkey's Audio | Yes | Yes | Yes | Yes | Yes | No | No | Yes | No | No | No | No | No | No |
| MP3 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Musepack | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | No | No | No | No | No |
| Opus | Yes | Yes | Yes | Yes | Yes | No | No | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| RealAudio[48] | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | No | No | No | No | No |
| Speex | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | No | No | No | No | No |
| True Audio (TTA) | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes | Yes | Yes | Yes |
| USAC | Yes | Yes | No | No | No | No | No | No | Yes | Yes | No | ? | ? | ? |
| Vorbis | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | Yes | Yes | Yes | Yes |
| WavPack | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes | No | No | No | Yes | Yes | Yes |
| WMA[48] | Yes | Yes[49] | Yes | Yes | Yes | Yes | Yes | Yes | No | Yes | No | Yes | ? | ? |
Multimedia frameworks support edit
Technical details edit
| Audio compression format | Algorithm | Sample rate | Bit rate | Latency | CBR | VBR | Stereo | Multichannel |
|---|---|---|---|---|---|---|---|---|
| AAC | MDCT, Hybrid Subband (AAC-HE) | 8–192 kHz,[53] 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[54] | Yes | Yes | Yes: Dual, Mid/Side, Intensity, Parametric | Yes: Up to 48 channels |
| AC3 | MDCT | 32, 44.1, 48 kHz | 32–640 kbit/s | 32–48 ms | Yes | In theory, it supports VBR, but no high-quality encoder supports that feature. Most high-quality encoders only do CBR encoding | Yes | Yes: Up to 6 channels |
| AC4 | MDCT | 48 kHz | 24-1536 kbit/s | ? | Yes | No | Yes | Yes: Up to 24 channels |
| AMBE | ? | 8 kHz | 2-9.6 kbit/s | ? | ? | ? | ? | ? |
| AMR | ACELP | 8 kHz | 4.75, 5.15, 5.90, 6.70, 7.40, 7.95, 10.20, 12.20 kbit/s | 25 ms | Yes | Yes | No | No |
| AMR-WB (G.722.2) | ACELP | 16 kHz | 6.60, 8.85, 12.65, 14.25, 15.85, 18.25, 19.85, 23.05, 23.85 kbit/s | 25 ms | Yes | Yes | Yes: only in MPEG-4 Part 12 container | No |
| AMR-WB+ | ACELP | 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz | 6–36 kbit/s (mono) 7–48 kbit/s (stereo) | 60–90 ms | Yes | Yes | Yes | No |
| aptX | Subband ADPCM | 24–48 kHz (stereo) | 192–384 kbit/s (stereo) | 2 ms | Yes (4:1) | No | Yes | Yes: Up to 8 channels |
| ATRAC1 | MDCT-Hybrid Subband | 44.1 kHz | 292 kbit/s | >100 ms | Yes | No | Yes: Dual Only | No |
| ATRAC3 | MDCT-Hybrid Subband | 44.1 kHz | 66, 105, 132, 146, 176, 264, 352 kbit/s | >100 ms | Yes | No | Yes: Dual (LP2), Mid/Side (LP4) | No |
| ATRAC3plus | MDCT-Hybrid Subband | 44.1, 48 kHz | 32–768 kbit/s | >100 ms | Yes | No | Yes | Yes: Up to 8 channels |
| ATRAC9 | MDCT-Hybrid Subband | 12, 24, 48 kHz | 36-672 kbit/s | >100 ms | Yes | No | Yes | Yes: Up to 8 channels |
| BroadVoice (BV16, BV32) | Two-Stage Noise Feedback Coding (TSNFC) | 8, 16 kHz | 16, 32 kbit/s[55] | 5 ms | Yes | No | No | No |
| Codec2 | Speech | 8 kHz | 0.7, 1.2, 1.3, 1.4, 1.6, 2.4, 3.2 kbit/s | 20–40 ms | Yes | No | No | No |
| E-AC3 | MDCT | 32, 44.1, 48 kHz | 32–6144 kbit/s | 5.33–48 ms | Yes | No | Yes | Yes: Up to 15 channels |
| E-aptX | Subband ADPCM | 15–48 kHz | 60, 384, 767, 1024 kbit/s, 1.28 Mbit/s | ? | Yes (4:1) | No | Yes | Yes: Up to 8 channels |
| Encodec | Neural networks | 24 kHz (Mono) 48 kHz (Stereo) | 1.5 (Mono only), 3, 6, 12, 24 kbit/s | ? | Yes | No | Yes | No |
| EVS | Speech | 8, 16, 32, 48 kHz | 5.9, 7.2, 8, 9.6, 13.2, 16.4, 24.4, 32, 48, 64, 96, 128 kbit/s + AMR-WB bitrate modes | 20 ms | Yes | Only 5.9 kbit/s with DTX on | Yes | No |
| GSM-HR | VSELP | 8 kHz | 5.6 kbit/s | 25 ms | Yes | No | No | No |
| GSM-FR | RPE-LTP | 8 kHz | 13 kbit/s | 20–30 ms | Yes | No | No | No |
| GSM-EFR | ACELP | 8 kHz | 12.2 kbit/s | 20–30 ms | Yes | No | No | No |
| HE-AAC | ? | 22 ~ 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[56] | Yes | Yes | Yes: Dual, Mid/Side, Intensity, Parametric | Yes: Up to 48 channels |
| HVXC | Speech | 8 kHz | 2, 4 kbit/s | 36 ms | Yes | Yes | No | No |
| iLBC | Block Independent LPC | 8 kHz | 13.33, 15.20 kbit/s | 25, 40 ms | Yes | No | No | No |
| iSAC | Transform coding | 16, 32 kHz | 10–52 kbit/s | 33, 63 ms | Yes | Yes | No | No |
| LC3 | Speech | 8, 16, 24, 32, 48 kHz | 16-320 kbit/s | 7.5-10 ms | Yes | No | Yes | No |
| LDAC | Subband ADPCM | 44.1, 48, 88.2, 96, 176.4, 192 kHz | 303, 606, 909 kbit/s (44.1/88.2/176.4 kHz) 330, 660, 990 kbit/s (48/96/192 kHz) | ? | Yes | No | Yes | No |
| LHDC | Subband ADPCM | 44.1, 48, 96 kHz | 400, 560, 900 kbit/s | ? | Yes | No | Yes | No |
| L2HC | Subband ADPCM | 44.1, 48, 96, 192 kHz | 400, 560, 960, 1920 kbit/s | ? | Yes | No | Yes | ? |
| Lyra | Speech | 8, 16, 32, 48 kHz | 3.2, 6, 9.2 kbit/s | 20 ms | Yes | No | No | No |
| MP3 (MPEG-1, 2, 2.5 Audio Layer III) | MDCT, Hybrid Subband | 8, 11.025, 12, 16, 22.05, 24, 32, 44.1, 48 kHz | 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160, 192, 224, 256, 288, 320 kbit/s | >100 ms | Yes | Yes | Yes: Dual, Mid/Side, Intensity | No |
| MPEG-1 Audio Layer II (MP2) | Subband | 32, 44.1, 48 kHz | 32, 48, 56, 64, 80, 96, 112, 128, 160, 192, 224, 256, 320, 384 kbit/s | Yes | Yes: but decoders are not required to support it | Yes: Dual, Intensity | No | |
| MPEG-2 Audio Layer II (MP2) | Subband | 16, 22.05, 24 kHz[57][58] | 8, 16, 24, 32, 40, 48, 56, 64, 80, 96, 112, 128, 144, 160 kbit/s[57] | Yes | Yes: but decoders are not required to support it | Yes | Yes: up to 5 full range audio channels and an LFE-channel with MPEG Multichannel | |
| Musepack | Subband | 32, 37.8, 44.1, 48 kHz | 20–350 kbit/s | ? | No | Yes | Yes | Yes: Up to 8 channels |
| Opus | MDCT, LPC, LTP | 8–48 kHz | 6–510 kbit/s | 5–66.5 ms | Yes | Yes | Yes | Yes: Up to 255 channels[59] |
| RealAudio | MDCT | Varies (see article) | Varies (see article) | Varies | Yes | Yes | Yes | Yes: Up to 6 channels |
| Satin | Speech | 8, 16, 32, 48 kHz | 6-36 kbit/s | ? | Yes | No | Yes | No |
| SILK | LPC, LTP | 8, 12, 16, 24 kHz | 6–40 kbit/s | 25 ms | Yes | ? | ? | ? |
| Siren 7 | Derived from PT716plus, MLT | 16 kHz | 16, 24, 32 kbit/s | 40 ms | Yes | No | No | No |
| Siren 14 | MLT | 32 kHz | 24, 32, 48 kbit/s (mono) 48, 64, 96 kbit/s (stereo) | 40 ms | Yes | No | Yes | No |
| Siren 22 | MLT | 48 kHz | 32, 48, 64 kbit/s (mono) 64, 96, 128 kbit/s (stereo) | 40 ms | Yes | No | Yes | No |
| SNAC | Neural networks | 24, 32, 44.1 kHz | 0.98 (24 kHz), 1.9 (32 kHz), 2.6 (44.1 kHz) kbit/s | ? | Yes | No | No | No |
| Speex | CELP | 8, 16, 32, (48) kHz | 2.15–24.6 kbit/s (NB) 4–44.2 kbit/s (WB) | 30 ms (NB) 34 ms (WB) | Yes | Yes | Yes: Intensity | Yes |
| TSAC | Neural 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) | ? | Yes | No | Yes | No |
| 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 kHz | 6-128 kbit/s (mono) 12-320 kbit/s (stereo) | ? | Yes | Yes | Yes | No |
| VMR-WB | ACELP | 16 kHz | 8.55, 4.0, 0.8, 13.3, 6.2, 2.7, 1.0 kbit/s | 33.75 ms | Yes | Yes | ? | ? |
| Vorbis (Ogg) | MDCT | 8–192 kHz | 45-500 kbit/s (32-500 kbit/s for aoTuV tunings) | >100 ms | Yes/ABR | Yes | Yes: Dual, Lossless, Phase, Point (Intensity) | Yes: Up to 255 channels |
| WavPack Lossy | Prediction, Quantization | 1 Hz to 16.777216 MHz | 196 kbit/s and up in lossy mode (for CD audio) | 3523.8 ms | Yes | Yes | Yes | Yes: Up to 256 channels |
| Windows Media Audio Standard | MDCT | 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz | 8–768 kbit/s | >100 ms | Yes | Yes | Yes | It can be hacked to support 5.1/7.1 support, but officially it doesn't support multi-channel |
| Windows Media Audio Pro | MDCT | 8, 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 | Yes | Yes | Yes | Yes: At least 8 channels, expandable |
| Windows Media Audio Voice | ACELP? | 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) | ? | Yes | No | It can be hacked to support stereo support, but officially it doesn't support stereo | It can be hacked to support 5.1/7.1 support, but officially it doesn't support multi-channel |
| Audio compression format | Algorithm | Sample rate | Bits per sample | Latency | Stereo | Multichannel |
|---|---|---|---|---|---|---|
| ALAC | Lossless | 1–384 kHz | 16, 20, 24, 32[60] | ? | Yes | Yes: Up to 8 channels |
| ALS | Lossless | 0–4 GHz | 8, 16, 24, 32 (int or float) | ? | Yes | Yes: Up to 65536 channels |
| ATRAC Advanced Lossless | Lossless | 44.1 kHz | 16 | ? | Yes | No |
| Dolby TrueHD | Lossless | 48, 96, 192 kHz | 16, 20, 24 | ? | Yes | Yes: 5.1, 7.1, and Dolby Atmos object-based audio[61] |
| DTS-HD Master Audio | Lossless | 48, 96, 192 kHz | 16, 24 | ? | Yes | Yes: Up to 7.1[62] |
| FLAC | Lossless | 1–1.048575 MHz (>655.350 kHz need not be streamable)[63] | 4–32 | 4.3–92 ms (46.4 ms typical) | Yes | Yes: Up to 8 channels |
| HD-AAC | ? | ? | ? | ? | ? | ? |
| LA | Lossless | 0–4 GiHz | 16 | ? | Yes | No |
| L2HC | Lossless | 44.1kHz | 16 | ? | Yes | No |
| Monkey's Audio | Lossless | 1–655.350 kHz[citation needed] | 8, 16, 24, 32 and 32-bit float | 1670 to 26,749 ms (varies with compression) | Yes | Yes: Up to 32 channels since version 5.50[64] |
| OptimFROG | Lossless | 0–4 GiHz[65] | 8, 16, 24, 32 (int or float) | ? | Yes | No |
| OSQ | Lossless | 6, 8, 11.025, 16, 22.05, 32, 44.1, 48, 64, 88.2, 96 kHz | 8, 16, 20, 24 | ? | Yes | No |
| RealAudio Lossless | Lossless | 8, 11.025, 16, 22.05, 32, 44.1 kHz | 16 | Varies | Yes | No |
| Sac | Lossless | 1–48 kHz | 16 | ? | Yes | No |
| TAK | Lossless | 8–192 kHz | 8, 16, 24 | ? | Yes | Yes: Up to 6 channels |
| True Audio (TTA) | Lossless | 0–4 GiHz | 8, 16, 24 | approx. 1045 ms[66] | Yes | Yes: Up to 16 (with ffmpeg), but no channel allocation |
| WavPack Lossless | Lossless, Hybrid | 1 Hz to 1 GiHz | Up to 32 (and 32-bit float), and 1-bit DSD. | ? | Yes | Yes: Up to 256 channels |
| Windows Media Audio Lossless | Lossless | 8, 11.025, 16, 22.05, 32, 44.1, 48, 88.2, 96 kHz | 16, 24 | >100 ms | Yes | Yes: Up to 6 channels |
| Audio compression format | Algorithm | Sample rate | Bit rate | Bits per sample | Latency | CBR | VBR | Stereo | Multichannel |
|---|---|---|---|---|---|---|---|---|---|
| G.711 | companding A-law or μ-law, PCM | 8 kHz | 64 kbit/s | 8 bit (log) | 125 μs (typical) | Yes | No | No | No |
| G.711.0 | Lossless compression of G.711 | 8 kHz | 0.2–65.6 kbit/s | 8 bit (log) | 5–40 ms | No | Yes | No | No |
| G.711.1 | MDCT, A-law, μ-law | 8, 16 kHz | 64, 80, 96 kbit/s | 16 bit | 11.875 ms | Yes | Yes | No | No |
| G.718 | CELP, MDCT, Lossy | 8, 16 kHz | 8, 12, 12.65, 16, 24, 32 kbit/s | 16 bit | 42.875–43.875 ms | Yes | Yes | No | No |
| G.718B | CELP, MDCT, Lossy, Sinusoidal Coding | 32 kHz | 36, 40, 48 kbit/s | 16 bit | 49.625 ms | Yes | Yes | No | No |
| G.719 | MDCT,[67] Lossy (incorporates elements of Siren Codec and Ericsson technology) | 48 kHz | 32–88 kbit/s in 4 kbit/s steps, 88–128 kbit/s in 8 kbit/s steps | 16 bit | 40 ms | Yes | No | Yes: only in MPEG-4 Part 12 container | Yes: only in MPEG-4 Part 12 container |
| G.721 | ADPCM, Lossy | 8 kHz | 32 kbit/s | 13 bit | Yes | No | No | No | |
| G.722 | sub-band ADPCM, Lossy | 16 kHz | 64 kbit/s (comprises 48, 56 or 64 kbit/s audio and 16, 8 or 0 kbit/s auxiliary data) | 14 bit | 4 ms | Yes | No | No | No |
| G.722.1 | Modulated Lapped Transform (MDCT), Lossy (based on Siren Codec) | 16 kHz | 24, 32 kbit/s | 16 bit | 40 ms | Yes | No | No | No |
| G.722.1C | Modulated Lapped Transform (MDCT), Lossy (based on Siren Codec) | 32 kHz | 24, 32, 48 kbit/s | 16 bit | 40 ms | Yes | No | No | No |
| G.722.2 (AMR-WB) | multi-rate wideband ACELP, Lossy | 16 kHz | 6.60, 8.85, 12.65, 14.25, 15.85, 18.25, 19.85, 23.05, 23.85 kbit/s | 14 bit | 25 ms | Yes | Yes | Yes: only in MPEG-4 Part 12 container | No |
| G.723 | ADPCM, Lossy | 8 kHz | 24, 40 kbit/s | 13 bit | Yes | No | No | No | |
| G.723.1 | MP-MLQ, ACELP, Lossy | 8 kHz | 5.3, 6.3 kbit/s | 13 bit | 37.5 ms | Yes | No | No | No |
| G.726 | ADPCM, Lossy | 8 kHz | 16, 24, 32, 40 kbit/s | 13 bit | 125 μs | Yes | No | No | No |
| G.727 | ADPCM, Lossy | 8 kHz | 16, 24, 32, 40 kbit/s | 13 bit | Yes | Yes | No | No | |
| G.728 | low-delay CELP, Lossy | 8 kHz | 16 kbit/s | 13 bit | 0.625 ms | Yes | No | No | No |
| G.729 | CS-ACELP, Lossy | 8 kHz | 8 kbit/s | 13 bit | 15 ms | Yes | No | No | No |
| G.729D | CS-ACELP, Lossy | 8 kHz | 6.4 kbit/s | 13 bit | Yes | No | No | No | |
| G.729E | CS-ACELP, Lossy | 8 kHz | 11.8 kbit/s | 13 bit | 15 ms | Yes | No | No | No |
| G.729.1 | CELP, TDBWE, TDAC (MDCT), Lossy | 8, 16 kHz | 8 kbit/s, 12–32 kbit/s in 2 kbit/s steps | 16 bit | 48.9375 ms | Yes | Yes | No | No |
Notes edit
- The latency listed here is the total delay (frame size, plus all lookahead) at the normal operating sample rate (typically 44.1 kHz).
- Lossless compression will have a variable bit rate.
See also edit
References edit
External links edit
- Comparative test April, 2004 Archived 2011-06-07 at the Wayback Machine
- EBU subjective listening tests on low-bitrate audio codecs
- Hydrogenaudio comparison of lossless formats
- Tsabary, Eldad. "A Survey of Audio Coders for Electronic-Art Music." eContact! 9.4 — Perte auditive et sujets connexes / Hearing (Loss) and Related Issues (May 2007). Montréal: CEC.
- Rodman, Jeffrey "VoIP to 20 kHz: Codec Choices for High Definition Voice Telephony" (July, 2008)
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