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True Audio

Developer(s)	Alexander Djourik
Stable release	3.4.1 / July 26, 2007
Operating system	Linux, Windows
Type	Audio codec, encoder
License	GPL
Website	www.true-audio.com

True Audio (abbreviated TTA) is a free, real-time lossless audio codec, based on adaptive prognostic filters. Also, .tta is the generic extension to filenames of audio files created by True Audio codec.^[1]

Contents 1 Codec overview 2 The project 3 See also 4 External links 5 References

[edit] Codec overview

• Compression rates up to 30%
• A Real-time encoding and decoding algorithm
• Minimal system requirements
• Multiplatform
• Free (consequently, has open source)
• Hardware compression support

TTA performs lossless compression on multichannel 8, 16 and 24 bit data of uncompressed wav input files. The compression ratio of TTA depends on the type of music file being compressed, but after compression the size of output file will generally range between 30% - 70% of the original. TTA format supports both of ID3 v1 and ID3 v2 information tags.

[edit] The project

The TTA project provides:

• Plugins for the most popular media players
• TTA DirectShow filters
• Tau Producer - GUI based compressor for Windows
• Set of the C/C++ TTA development libraries

[edit] See also

• Lossless data compression
• Lossy data compression
• Audio data compression
• Comparison of audio codecs
• FLAC

[edit] External links

• Official website
  • Compression theory
  • TTA format description
  • True Audio codec comparison
  • Hardware Support
• Project @ Corecodec.Org
• Project @ Sourceforge.Net

[edit] References

1. ^ So, in short: TTA encoder defines TTA audio file format.

v • d • e Multimedia compression formats Video compression ISO/IEC MJPEG · Motion JPEG 2000 · MPEG-1 · MPEG-2 (Part 2) · MPEG-4 (Part 2/ASP · Part 10/AVC) · HVC ITU-T H.120 · H.261 · H.262 · H.263 · H.264 · H.265 Others AMV · AVS · Bink · CineForm · Cinepak · Dirac · DV · Indeo · OMS Video · Pixlet · RealVideo · RTVideo · SheerVideo · Smacker · Sorenson Video · Theora · VC-1 · VP6 · VP7 · VP8 · WMV  · XVD Audio compression ISO/IEC MPEG-1 Layer III (MP3) · MPEG-1 Layer II · MPEG-1 Layer I · AAC · HE-AAC · MPEG-4 ALS · MPEG-4 SLS · MPEG-4 DST ITU-T G.711 · G.718 · G.719 · G.722 · G.722.1 · G.722.2 · G.723 · G.723.1 · G.726 · G.728 · G.729 · G.729.1 Others AC3 · AMR · AMR-WB · AMR-WB+ · Apple Lossless · ATRAC · DRA · FLAC · GSM-FR · GSM-EFR · iLBC · Monkey's Audio · μ-law · Musepack · Nellymoser · OptimFROG · RealAudio · RTAudio · SHN · SILK · Siren · Speex · TwinVQ · Vorbis · WavPack · WMA · True Audio Image compression ISO/IEC/ITU-T JPEG · JPEG 2000 · JPEG XR · lossless JPEG · JBIG · JBIG2 · PNG · WBMP Others APNG · BMP · DjVu · EXR · GIF · ICER · ILBM · MNG · PCX · PGF · TGA · TIFF Media containers General 3GP · ASF · AVI · Bink · DMF · DPX · EVO · FLV · GXF · M2TS  · Matroska · MPEG-PS · MPEG-TS · MP4 · MXF  · Ogg · QuickTime · RealMedia · RIFF · Smacker · VOB Audio only AIFF · AU · WAV See Compression methods for methods and Compression software implementations for codecs

v • d • e Data compression software implementations Video compression (Comparison) MPEG-4 ASP 3ivx · DivX · Nero Digital · FFmpeg MPEG-4 · HDX4 · Xvid H.264/MPEG-4 AVC CoreAVC  · Blu-code  · DivX H.264  · Nero Digital AVC  · QuickTime H.264 · x264 Lossless CorePNG · FFV1  · Huffyuv · Lagarith · MSU Lossless  · SheerVideo Others CineForm · Cinepak · DNxHD · Helix DNA Producer · Indeo · libavcodec · Schrödinger (Dirac) · SBC · Sorenson · VP7 · libtheora · Windows Media Encoder Audio compression (Comparison) Lossy Freeware Advanced Audio Coder (FAAC) · Helix DNA Producer · l3enc · LAME · TooLAME · libavcodec · libcelt · libspeex · Musepack · libvorbis · Windows Media Encoder Lossless FLAC · ALAC · Monkey's Audio · OptimFROG · TTA  · WavPack Archivers (Comparison) Free software 7-Zip · Ark · bzip2 · compress · File Roller · gzip · Info-ZIP · KGB Archiver · lzop · PAQ · PeaZip · The Unarchiver · tar · Xarchiver Freeware 7zX · DGCA · Filzip · IZArc · LHA · StuffIt Expander (decompression only)  · TUGZip · UHarc/WinUHA · Zipeg · ZipGenius Proprietary ARC · ALZip · Archive Utility · ARJ · Astrotite · JAR · MacBinary · PKZIP/SecureZIP · PowerArchiver · Squeez · StuffIt · WinAce · WinRAR · WinZip Command line ARC · ARJ · JAR · Info-ZIP · LHA · lzop · PAQ · PKZIP · RAR · UPX · UHarc · tar See Compression methods for methods and Compression formats for formats