NationMaster - Encyclopedia: AIFF

Audio Interchange File Format (AIFF) is an audio file format standard used for storing sound data on personal computers. The format was co-developed by Apple Computer based on Electronic Arts Interchange File Format (IFF) and is most commonly used on Apple Macintosh computer systems. AIFF is also used by Silicon Graphics Incorporated. To meet Wikipedias quality standards, this article or section may require cleanup. ... A schematic representation of hearing. ... Apple Computer, Inc. ... EA redirects here. ... Interchange File Format (IFF), is a generic file format originally introduced by the Electronic Arts company in 1985 in order to ease transfer of data between software products produced by different companies. ... The first Macintosh computer, introduced in 1984, upgraded to a 512K Fat Mac. The Macintosh or Mac, is a line of personal computers designed, developed, manufactured, and marketed by Apple Computer. ... Silicon Graphics, Inc. ...

The audio data in an AIFF file are uncompressed big-endian pulse-code modulation (PCM) so the files tend to be much larger than files that use lossless compression (such as FLAC) or lossy compression formats such as Vorbis and MP3. Uncompressed AIFF files at compact-disc settings (44.1K samples/sec, 16 bits, 2 channels) thus have a bitrate of 1411.2 kbit/s. The AIFF-Compressed (AIFF-C or AIFC) format supports compression ratios as high as 6:1. Endianness generally refers to sequencing methods used in a one-dimensional system (such as writing or computer memory). ... Pulse-code modulation (PCM) is a digital representation of an analog signal where the magnitude of the signal is sampled regularly at uniform intervals, then quantized to a series of symbols in a digital (usually binary) code. ... Lossless data compression is a class of data compression algorithms that allow the original data to be reconstructed exactly from the compressed data. ... The Free Lossless Audio Codec (FLAC) logo. ... Audio compression is a form of data compression designed to reduce the size of audio data files. ... Vorbis is an open and free lossy audio compression codec project headed by the Xiph. ... This article or section does not cite its references or sources. ... The CDDA trademark Red Book is the standard for audio CDs (Compact Disc Digital Audio system, or CDDA). ...

An AIFF file is divided into a number of chunks. Each chunk is identified by a chunk ID known as a OSType. OSType (also known as FourCC or ResType) is the name of a four-byte type commonly used as an identifier in Mac OS. The four bytes could in principle have any binary value, though they are usually ASCII or characters from the Mac Roman character set. ...

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In music, a riff is an ostinato figure: a repeated chord progression, pattern or melodic figure, often played by the rhythm section instruments, that forms the basis or accompaniment of a rock music or jazz composition. ... A FOURCC (literally, four character code) is a sequence of four bytes used to uniquely identify data formats. ... Apple Lossless (also known as Apple Lossless Encoder, ALE, or Apple Lossless Audio Codec, ALAC) is an audio codec developed by Apple Computer for lossless compression of digital music. ...

Category: Computer file formats Multimedia is the use of several media (e. ... Bold text Wiktionary has related dictionary definitions, such as: compressor, compression inthe wkjhrlfidhb;g/df == Compressor may refer to: Gas compressor, a mechanical device that compresses a gas e. ... Format has several meanings; did you mean: Disk formatting — the process of preparing a disk for use File format — various ways information is encoded in computing Format — a command in the Common Lisp programming language Radio format — the musical style and programming philosophy of a radio station. ... Video compression refers to making a digital video signal use less data, without noticeably reducing the quality of the picture. ... ISO has many meanings: Iso is the stem of the Latin transliteration of the Greek word Î¯ÏƒÎ¿Ï‚ (Ãsos, meaning equal). The iso- prefix in English derives from this and means equality or similarity. ... The International Electrotechnical Commission (IEC) is an international standards organization dealing with electrical, electronic and related technologies. ... MPEG-1 defines a group of Audio and Video (AV) coding and compression standards agreed upon by MPEG (Moving Picture Experts Group). ... MPEG-2 is the designation for a group of coding and compression standards for Audio and Video (AV), agreed upon by MPEG (Moving Picture Experts Group), and published as the ISO/IEC 13818 international standard. ... MPEG-4 is a standard used primarily to compress audio and video (AV) digital data. ... H.264 is a high compression digital video codec standard written by the ITU-T Video Coding Experts Group (VCEG) together with the ISO/IEC Moving Picture Experts Group (MPEG) as the product of a collective partnership effort known as the Joint Video Team (JVT). ... The ITU Telecommunication Standardization Sector (ITU-T) coordinates standards for telecommunications on behalf of the International Telecommunication Union (ITU) and is based in Geneva, Switzerland. ... H.261 is an 1990 ITU video coding standard originally designed for transmission over ISDN lines on which data rates are multiples of 64 kbit/s. ... H.262 is an ITU-T digital video coding standard. ... H.263 is a video codec designed by the ITU-T as a low-bitrate encoding solution for videoconferencing. ... H.264 is a high compression digital video codec standard written by the ITU-T Video Coding Experts Group (VCEG) together with the ISO/IEC Moving Picture Experts Group (MPEG) as the product of a collective partnership effort known as the Joint Video Team (JVT). ... The Society of Motion Picture and Television Engineers or SMPTE (pronounced simptee or sometimes sumptee) is a US professional association of engineers. ... VC-1 is the informal name of the SMPTE 421M video codec standard. ... TrueMotion VP7 is a video codec developed by On2 Technologies as a successor to earlier efforts such as VP3, VP5 and TrueMotion VP6. ... RealVideo is a proprietary video codec developed by RealNetworks. ... Windows Media Video (WMV) is a generic name for the set of proprietary streaming video technologies developed by Microsoft. ... Indeo is a video codec originally developed by Intel and now owned by Ligos. ... Motion JPEG (M-JPEG) is a video codec Where each video field is separately compressed into a JPEG image. ... Theora is a video codec being developed by the Xiph. ... Dirac is a prototype algorithm for the encoding and decoding (see codec) of raw video. ... Audio compression is a form of data compression designed to reduce the size of audio data files. ... ISO has many meanings: Iso is the stem of the Latin transliteration of the Greek word Î¯ÏƒÎ¿Ï‚ (Ãsos, meaning equal). The iso- prefix in English derives from this and means equality or similarity. ... The International Electrotechnical Commission (IEC) is an international standards organization dealing with electrical, electronic and related technologies. ... The Moving Picture Experts Group or MPEG is a working group of ISO/IEC charged with the development of video and audio encoding standards. ... This article or section does not cite its references or sources. ... MPEG-1 Audio Layer II (MP2, sometimes Musicam) is an audio codec. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... MPEG-4 Part 3 (formally ISO/IEC 14496-3) is, as the name suggests, the third part of the ISO/IEC MPEG-4 international standard. ... The ITU Telecommunication Standardization Sector (ITU-T) coordinates standards for telecommunications on behalf of the International Telecommunication Union (ITU) and is based in Geneva, Switzerland. ... G.711 is an ITU-T standard for audio companding. ... G.722 is a ITU-T standard wideband speech codec operating at 32-64 kbit/s. ... G.722. ... Adaptive Multi Rate - WideBand or AMR-WB is a speech coding standard developed after the AMR using same technology like ACELP. The codec provides excellent speech quality due to wider speech bandwidth of 50 - 7000 Hz compared to narrowband speech codecs which in general are optimized for POTS wireline quality... This article is in need of attention from an expert on the subject. ... G.723. ... G.726 is ITU-T speech codec operating at bit rates of 16-40 kbit/s. ... G.729 From Wikipedia, the free encyclopedia You have new messages (changes). ... G.729 is an audio data compression algorithm for voice that compresses voice audio in chunks of 10 milliseconds. ... WavPack is a free, open source lossless audio compression format developed by David Bryant. ... The Free Lossless Audio Codec (FLAC) logo. ... The Internet Low Bit Rate Codec (iLBC) is a royalty free narrowband speech codec, developed by Global IP Sound (GIPS). ... RealAudio is a proprietary audio format developed by RealNetworks. ... Windows Media Audio (WMA) is a proprietary compressed audio file format developed by Microsoft. ... Speex is a free software speech codec that claims to be unencumbered by patent restrictions. ... Musepack or MPC is an open source lossy audio codec, specifically optimized for transparent compression of stereo audio at bitrates of 160-180 kbit/s. ... Vorbis is an open and free lossy audio compression codec project headed by the Xiph. ... ATRAC (Adaptive TRansform Acoustic Coding) is an audio compression algorithm used to store information on Minidiscs and other Sony_branded audio players. ... Description Dolby Digital is the trademark for Dolby Laboratories AC-3 audio coding system. ... Image compression is the application of data compression on digital images. ... ISO has many meanings: Iso is the stem of the Latin transliteration of the Greek word Î¯ÏƒÎ¿Ï‚ (Ãsos, meaning equal). The iso- prefix in English derives from this and means equality or similarity. ... The International Electrotechnical Commission (IEC) is an international standards organization dealing with electrical, electronic and related technologies. ... The ITU Telecommunication Standardization Sector (ITU-T) coordinates standards for telecommunications on behalf of the International Telecommunication Union (ITU) and is based in Geneva, Switzerland. ... In computing, JPEG(pronounced JAY-peg; IPA: ) is a commonly used standard method of compression for photographic images and not for movie files for which MPEG compression is used. ... JPEG 2000 is a wavelet-based image compression standard. ... faldfjajsldfkja;sdfkja;dkjfasdf;j ... JBIG is a lossless image compression standard from the Joint Bi-level Image Experts Group, standardized as ISO/IEC standard 11544 and as ITU-T recommendation T.82. ... JBIG2 is an image compression standard for bi-level images, developed by the Joint Bi-level Image Experts Group. ... An example of a GIF image. ... A PNG image with an 8-bit transparency channel (top). ... This article is about TIFF, the computer image format. ... PCX is an image file format that uses a simple form of run-length encoding (a type of lossless compression algorithm). ... Truevision TGA is a raster graphics file format. ... // Bitmap File Overview . ... Windows Media Photo (WMPhoto), a part of the Windows Media family, is a high compression still image format for continuous tone photographic images, developed by Andrew Gordon of Microsoft. ... ILBM is a subtype of the Interchange File Format used for storing picture data. ... A container format is a computer file format that can contain various types of data, compressed by means of standardized codecs. ... The Au file format is a simple audio file format that consists of a header of 6 32-bit words and then the data (high-order byte comes first). ... WAV (or WAVE), short for Waveform audio format, is a Microsoft and IBM audio file format standard for storing audio on PCs. ... NUT is a patent-free, multimedia container format started by the MPlayer and FFmpeg developers. ... Material eXchange Format (MXF) is a container format for professional digital video and audio media defined by a set of SMPTE standards. ... Matroska (common file extensions being . ... OGG can refer to several items: Ogg is a multimedia bitstream container, used for audio and video files, especially Vorbis audio files. ... Ogg Media (OGM), meaning Ogg Media File, is a container format (for video, audio and subtitle streams). ... MPEG-4 Part 14, formally, ISO/IEC 14496-14:2003, is a multimedia container format standard specified as a part of MPEG-4. ... QuickTime is a multimedia technology developed by Apple Computer, capable of handling various formats of digital video, sound, text, animation, music, and immersive panoramic (and sphere panoramic) images. ... RealMedia is a multimedia container format created by RealNetworks. ... AVI, an acronym for Audio Video Interleave, is a multimedia container format introduced by Microsoft in November 1992, as part of the Video for Windows technology. ... Advanced Systems Format (formerly Advanced Streaming Format) is Microsofts proprietary digital audio/digital video container format, especially meant for streaming media. ... 3GP Stands for Third Generation Partnership Project sometimes called 3GPP it is a multimedia container format defined by 3GPP for use on 3G mobile phones. ...

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